TrustRadius
Slack is a group messaging or team collaboration app that aims to simplify communication for businesses. Features include open discussions, private groups, and direct messaging, as well as deep contextual search and message archiving, and file sharing. Slack integrates with a number of other tools, such as MailChimp, Dropbox, and Google Drive. The product is free to use, and also has paid plans with more features and greater controls. The company has raised $340M in funding and boasts 800k users.Slack- a great tool and embraced by our group!Our department of IT project development uses Slack for communication between team members. This enables us to work remotely and more efficiently, and also allows us to target communication easily to individuals as well as custom groups. The whole organization has not started using this product at this time. But every member of the IT project development team is actively using this to discuss and share project issues and concerns as well as for department announcements, and various social uses- such as lunch planning, sharing various interests and items on the internet.,Sending notifications when messages are sent to you. Ease of user interface. Ability to add and communicate to people outside of your organization. Ability to share images and documents.,We are happy with all the funcationality in Slack.,8,I believe this has increased productivity amongst the team in that we can get immediate responses to issues and questions, allowing us to have a better continuous flow of work Having an easy to use tool like this speeds up on boarding, as new team members can easily learn. They also will have access to all existing resources within the tool We have been able to customize communication groups to include those appropriate, eliminating unnecessary noise regarding areas not relevant to particular team members.,Skype for Business (formerly Lync),ZenHub, Microsoft Visio, Microsoft Office 2016, WorkfrontSlack will raise the level of internal communication of your companyOur company was looking for a tool to standardize and centralize all internal communication. This limited the use of emails and helping to prevent conversations and exchange of confidential information of the company or projects of marketing actions and information were being exchanged free by there being able to be leaked. Slack was the choice, became the company's internal communication tool, centralized communication and also gave more agility, besides efficient, Slack proved very modern and attractive, officials love to work with it.,Plugins and integrations - Slack has many interesting plugins and integrations that leave the tool with the most modern air, such as the Giphy plugin that allows you to insert GIFS of reactions in your conversations only using search phrases. Apps - mobile apps are not just web-based adaptations to work in a basic way, on the contrary, Apps are robust, complete and seek to use the full functionality of each mobile platform (iOS /Android). Interface - Slack has a clean, modern, intuitive look and this helps to take the "weight" of the constant messaging, the employees spend hours communicating in Slack and its interface helps to make this journey lighter and more pleasant.,The sorting of channels - it's a bit confusing, could be better sorted, it would make it easier to search and make it more agile. Search - It could also improve, it is not bad, but in some cases (rare) it is difficult to find the term that you want. Heavy performance in other operating systems - At least in Linux, Slack seems to do a little more machine performance than when it is used on a computer running Windows.,10,Slack streamlines all the internal communication of the company, consequently helps to streamline several other procedures of the company thus giving more time of productivity to the officials. Slack is also an attractive and pleasant program for the officials, who like to use it, the look of it helps soften and delay fatigue due to hours of message exchanges, which would certainly be more stressful if they were made through an email exchange.,Skype,Zendesk, Adobe Connect, Sage Intacct, Shopify, ESET Endpoint SecurityGreat communication tool within an organizationSlack in used in our organization as a messaging platform over the web, where we connect with our colleagues and share information i.e, files, documents, pictures, etc. Slack is an alternative to most of our bcc's and cc's mail. It is used across the whole organization. Through Slack, we form a small group while working on a project, we do this for quick and easy passing of information.,Easy to use. Nice UI and UX. Get a notification for every message that we receive. Can form a small group to communicate with others while working on a common project.,No automatic messaging send option available. Sometimes message notifications are received with some delay.,9,It's good but a bit costly.,LinkedIn Sales Navigator, HubSpot CRM, SalesOutlook CRMSlack, a best-in-class collaboration toolSlack is a collaboration software used by our client. It is a truly amazing piece of collaborative software which has so many features. On top of that, it is extendable and add-ons can be installed to integrate new features. It is also easily integrated with microservices to provide alerts using hooks.,It is amazing, if not the best at what it does. It is extensible, many features can be integrated with this. It helps organize our workspace.,Slack has very little room for evolvement, it has almost done everything perfectly. It has an initial learning curve since it is different from other messaging apps. It can be a little resource intensive but given the features, it is hardly surprising.,10,Ultimate collaboration tool helps for effective team communication. Advanced tools for project management helps in cost savings. Seamless integration with third-party software makes adoption faster and saves man hours.,,Microsoft Office 365, Gitlab, GitHubTHE office communication software you can't live without.We use Slack as a primary communication tool within our organization. Being able to assign channels to group conversations, as well as instantly communicate with colleagues makes it an ideal tool for our organization. With remote employees, Slack is especially helpful at keeping everyone on the same page without having to sift through a ton of email for quick questions or just friendly chat.,Communications Grouping Conversations,So far, none. Slack has been great.,10,Fantastic Tool - has cut down on email drastically,Great for inter-office communication!We use Slack to communicate with each other inside the office as an alternative to email. We also still use email, but typically for more formal requests, or if documents need to be attached. Slack is a great communication tool because anyone can create a topic-specific 'channel' and make it either an open or closed channel. This makes it very easy to find specific conversations, or have a quick, informal chat with someone in the office.,The user-interface is very friendly and well laid out. Its intuitive to learn how to switch between channels, find new channels, and direct message individuals. There are a lot of fun GIFs, emojis, and other 'reactions' that can be used.,Sometimes it can be hard to search for a specific piece of information across all the channels you're a member of. For example, if there was a particularly useful link that one person shared but you don't remember which channel it was in, it can be a little difficult to find.,8,It has definitely streamlined communication, and made sure that issues can be addressed by the correct individuals. I do not use this feature myself, but other people within my company have set up 'slack bots' (similar to AI fueled chatbots) to automate various tasks which used to be performed manually. One example is gathering a data report from an external data source and presenting that report in the slack channel for individuals to access.,Third-party professional services Don't knowSlack Opens Communication in Our CompanySlack is being used by our entire organization to stay up-to-date on company/office-related items. We also use Slack on our team for quick updates. Slack has also been great to increase communication between the sales and marketing teams for one-off questions or support requests.,Allowing team members to stay in close communication. Allowing employees to ask questions that can be answered quickly. Allowing employees to connect on non-work-related items (improves company culture and morale).,Possibly include more training opportunities for users. Improved integrations with other software.,10,It's difficult to determine ROI, but it overall helps increase productivity among our team and the company. Increases communication and allows questions to be answered quickly rather than hitting a bottleneck.,Microsoft Teams,Zoom Video Webinar, Vimeo Pro, GoToWebinarFun, fresh communicationsSlack is used across our organization, in addition to other messaging software, to connect individuals and make it easy to communicate. Most people prefer Slack over the other available tools because of its ability to save messages and files in an easy, unobtrusive way, as well as for the "fun" aspects of it that make communicating at work enjoyable.,Slack enables us to use fun functions such as "/giphy" to make our communications more fun and casual. GIF wars end up bringing our department closer and injecting team spirit and humor into what could normally be stressful days. Slack is also great for creating quick, temporary groups. It's nice to be able to get a group message going and then have the option to just stop using it or to convert it to a private channel later. One of the best things is how Slack saves message history. You can close any DM, including group DMs and then pull it back up later. This enables you to save the information and history without having a cluttered list of interactions.,It's a minor point and one that's likely outside of Slack's core competencies, but if you're looking for a communication tool that also includes voice chat, this isn't it.,10,Slack makes it easier and quicker to get answers I need. While I'm not involved in the ROI measurements of software, I can say that it has helped me complete my projects quicker.,Skype for Business and MiCloud Connect (formerly ShoreTel),Microsoft Office 365, Qualtrics, Tableau DesktopSlack is an app that's totally not SlackingWe use Slack for all of us to communicate, collaborate, and stay updated on pushes from our Git repository. It's been useful to send data to and notify us on a regular basis so that we are all on the same page. Everybody currently uses it at our company but a majority of the posts come from our software engineers.,The ability to search ALL messages and files with it's powerful search bar. The integrations that are possible with their API, creating endless bots that can be of useful to companies. Being able to share files inside this application quickly and swiftly with the team.,Easier video/conference chat calls Drop in/out voice channel like Discord More customization to make it feel more comfortable for each workplace,10,It's starting package is free for up to 10,000 messages so there is no cost risk to starting implementation of it. It's allowed us to be more collaborative and keep each other on the same page during work, meaning less time wasted trying to figure out tasks. Being able to get notifications about pushes allows us to keep up to date on all information, overall reducing our idle time waiting on each other.Slack is a useful tool for organising projectsSlack is used in smaller groups within departments. It helps to address the lack of communication after work or when we are out of the office. We use it to organize and advertise meetings and share information about news that might be of the group´s interest. In addition, it is very useful when it comes to asking a question to specific members of the group.,The structure in channels allows us to keep conversations organized The easy integration with bots. This is very useful for us when someone updates a repository. It is a very intuitive tool.,Sometimes we experience some connection issues Notifications across devices are sometimes missing The search function can be improved, especially when we are trying to recover an old conversation,9,Save time due to the notification tool which lets me know when someone is updating something Save time on catching up on specific tasks because of the organization in channels The negative impact I have experienced is when I try to search files that were shared some time ago and I could not find them,Slack - The ultimate IM SoftwareWe use Slack as a way to communicate between our 4 offices. All departments use and new staff are trained on it. The option to have separate channels makes it really easy to find updates by department or team or by office.,Channels - We really like having specific channels by office and one that includes all employees. This is great for when specific events are happening or if an employee fields a call from another office and needs to look for another employee to field it too. Communication has really increased with these options Fun - The option to add gifs makes it fun to IM people. Also being able to add emojis adds another level of fun. We can "vote" on posts with our "reactions". It makes it much easier to understand people's tone when you have someone adding a fun gif at the end of a message. Notifications - The various options of getting notified on messages really is handy. You have it where you can do pop ups or someone can @ you in a message and a subthread comes up. Also the option for notifications to come to your phone is great for offsite employees.,It took me a while to figure out how to share a screen. The call button wasn't very obvious to me that I had to click that before I could share a screen.,10,Positive - The rate of communication increases. You can tell if someone is available or not. This can be the difference between fielding a call to get a customer's invoice paid right then and there, or having to waiting another day or two and speak to them about invoice questions.,Skype for Business,ConnectWise Manage, Highfive, WebEx Meetings, IT GlueSlack makes communication easyWe use Slack throughout our entire organisation. It's an incredible piece of software which makes segmenting announcements a simple & effective process. One of the most attractive features that this software provides is the ability to integrate seamlessly with many third party software vendors, making the benefit two-fold. It's thanks to integration potential that we're able to schedule alerts, announcements, birthday reminders and more all in one central location.,Slack provides the ability to create to-do list style reminders at specific times & recurring intervals. Slack makes direct messaging, announcements & communication in general easy. Slack provides a great way to get to know your colleagues & have a transparent conversation history.,There's a slight learning curve involved with the reminder interface. Offline chat is problematic & LAN sync not always effective. Private channels can clutter up your work-space pretty easily, so be sure to restrict access.,10,Slack has made communication & announcements a simple task for our business.Slack is an amazing chat system for mid to large sized businessesAcross the whole organization- but the ease of quickly containerizing groups and issues is how we use it. So departments can have their own space, and groups can be created on the fly for quick solutions or brainstorming. It's a cool, and also fun tool for communication. Huge upgrade from other ways to chat.,Securely containerize group chats for organization of needs. Share files and data internally for quick collaboration. Real-time notifications for important pieces of information to be able to act or respond directly when necessary.,The sorting of channels is not my favorite. There are ways but definitely needs improvement. Search is clunky. Not bad, but I find the UI for that piece to be a bit overwhelming. Apps is a section I haven't delved into. Sounds like there are cool things to do or integrate, but its not advertised well.,10,This allows for virtual collaboration in ways that save us all time. A more internal way to share documents easily, which is also a big time saver. Great visibility into the entire organization. More of a soft skill than ROI, but huge impact on the culture of the company.,HipChat and Skype for Business,Skype for BusinessSlack's power.Slack is used across the whole organization for communicating with every professional. It is the easiest way to discuss work tasks.,When discussing, you can attach images. Slack gives enough space for files to share. You can create a separate chat for each topic. There is integration with a large number of external services like Trello. Each team member receives notifications only about those messages that are addressed specifically to him.,API as a whole is very poor. API does not provide the ability to customize widgets in the chat. Linux clients use memory very intensively. Proprietary application (not free for distribution).,7,Simplifies communication. Speeds up work on projects. Saves money and nerves.,Skype,Google Analytics, Microsoft Azure, Google Cloud StorageMy performance with Slack is good.Slack is a tool designed to create and establish strategies to guarantee a good service to your colleagues, clients and friends. Since we implemented this tool, the important advances we have obtained are reflected in the satisfaction of having accurate and quality information at hand. Slack has helped us to organize a myriad of tasks that relate to my activity itself.,It is a very easy tool to use and integrate with other platforms. Establish internal chat groups to review work issues. Make video calls and connect with some friends to take opinions about what I'm doing.,The interconnectivity with some applications or tools are not very good. Search engine and update. Very low user login design.,10,The answers to solutions of activities to be carried out are efficient. We have many proposals and concerns about making good decisions about using tools that generate additional costs. Slack does not have this issue. Therefore, this tool does not generate additional costs in the evolution of the main activities within my organization.Slack is the StandardIt is used across the whole org as well as within each dept separately. Huge help with the ability to have archives of shared knowledge that may fall through the cracks when employees leave or transition to new roles. In addition, it streamlines collaboration that is transactional in nature, saving time to do more important work. The emojis are surprisingly helpful with reporting.,Ease of communication. Seamless experience across devices. Enjoyable to use.,The search function could be improved for scope. Can get hectic. Would like ability to control privacy of messages more fully.,10,Can be distracting. Not always used for work. Too easy to use, makes it easy for people to seem like they're working but are actually talking with friends.Great for communication across offices.[It's being used] Across the whole organization - great for working internationally. All of our team members use it daily to talk about projects, send files from Word docs to images, integrate with Hubspot, etc.,Quick communication Categorizing conversations and projects Communicating across offices,Desktop notifications can be distracting,8,Great for mobile communication and timesaving It helps everyone get their projects done on time Cuts down on unnecessary emails and meetings,Google HangoutsSlack Is Incredible And EfficientSlack is used as means of communication by us and clients as well by our colleagues. It is used by a department only. It's reduced our internal email. All our work is now done at a faster rate than before due to faster communication. In my opinion, it is way faster than skype for business.,It's reduced our internal email. Cost management. Slack provides a much better system to communicate with your clients as well as your colleague. You can directly communicate with your clients using Slack.,Cannot preview document without downloading. Need a feature of video conferencing as well.,9,Slack is a free tool, we haven't seen any negative impact. We can get help more quicker which means we can spend more time doing the actual work.,Skype for Business (formerly Lync) and HubSpot,Skype for Business (formerly Lync), SAP NetWeaver Application ServerThe Bee's KneesI use Slack to communicate with my colleagues. I also use slack to track incoming requests from different teams across the organization and to transfer large files that may be too large for email to handle. So many features and the file sharing absolutely key as Outlook sends so many issues with file storage.,Easy to use Many apps for integration The mobile app experience is great and has nice notification features,Doesn't completely kill email as there are other colleagues in the organization who aren't using slack A little bit steeper of a curve to pick-up on, but so powerful once the team is on board,8,I am using the free version,Lync,Oracle Eloqua, SelligentGreat collaboration toolSlack is being used company wide as the main internal communication and collaboration tool,Conference calls Team collaboration Easy to share files and write bots to automate proccesses,Bots only available to admins Need to make easier for conference calls with multiple people In chat mode people disappear from your list if you have not talk to them for a while,8,Increases productivity within groups,Skype for BusinessOne Chat to Rule them All, and in the Loudness Bind themWe currently use slack at our organization for our main non-verbal internal communication. We've tried to mitigate our reliance on email internally as we used to see emails slung around without much thought. Now we just fire off a quick message. We have some remote employees communicate with Slack as a primary internal communication tool. Additionally we utilize a third-party chat solution for a product site that allows end-users to communicate with us via slack. They don't know they are talking to us via slack but the chat widget integrates with a specific Slack channel. Slack is flexible in this way.We use slack to send us reminders to follow-up with customers and leads by way of a scheduled notification/reminder from our internal custom CRMWe will toss files back and forth at times when we need to share something quickly,API Integrations 3rd Party Support File/Image support Mobile App works well Audio and Video Calls Text formatting and Code sharing (for developers) Notification Options,Performance can be slow at times Using slack creates a reliance on it - like any social media, feeling that you may fall behind if you don't view it for a time It can be easy to miss messages if they're not directly addressed to you (which many users may forget, although this is hardly a fault of slack — they do their best to balance message notification configuration with options),8,I'm not sure how measurable it is to determine impact of a chat app on business. It does help us to maintain effective communication avenues between our office and remote employees. It helps us schedule easy reminders which can keep us accountable to our customer/lead follow-ups which definitely helps alleviate some stresses with customers.,,Bitbucket, GitHub, Google Analytics, Dropbox,On-boarding users in our org Chatting - Formatting Text Configuring and customizing Slack is great and quite simple 3rd Party API integrations and webhooks are easy to integrate,Switching between different Slack Groups can create slow loading times Threaded messages can be confusing to some users,Yes,9Slack is best for the non-Slackers!I'm using Slack now with two of my existing clients. One from Australia and one from the US but currently based in Singapore. Slack helps to group our messaging accordingly and retrieve messages to a certain point. I love using Slack because it removes the noise that's available on Skype.,Slack allows you to focus on work-related messages only. Slack allows you to notify relevant people who're part of a channel or group messaging. Slack gives you to the ability to track back your previous messages to the group or to a particular person.,Slack should improve it's video call features. It had failed many times based on my experience. Slack should include options so the sender will see if the person messaged have seen the message or not yet. Slack should improve it's current user interface too so it looks better.,8,Slack allowed the entire team to communicate better and focus on project communication only. Slack give us a better way of communicating through group chats and move faster on project fulfillment. Slack made our chat communication better than ever.,Skype,Google DriveSlack ReviewSlack is perfect for working with computers remotely. In my case I used it in a company where we worked remotely, and it works perfectly, has many functions, and the best thing is that the mobile app works wonders. You can chat with your team work constantly and keep your group organized. Besides that you can share many things in a conversation, you can also activate notifications, on the desktop and always be attentive to your chats. I've also used it to conduct remote conversations and inductions through a slack chat since you can share different types of files and it's pretty good,Mobile app works perfectly Integration with 3rd party app You can share code snippets for developers Instant messaging, with many people at the same time,Does not allow to make video calls Does not show the last time the user was active High influence on the border of belonging to comparison groups The notifications can be very distracting,9,Team productivity There is no need to have physical meetings You can define topics for the chats and everything is stored there Due to productivity you save a lot of time which translates into money,Skype and Google Hangouts,Google Hangouts, SkypeThe best way to maintain optimal communication in the company.I use slack to communicate with all the members of the departments and programmers of the different projects of the company.It is an excellent application and is the one that we use even for conferences and video calls since it works quite well.The history that is kept for all conversations is quite useful because, thanks to that, we keep a record of everything we talk about in the company.The groups are also quite useful and we use them to divide the company into departments.,What I like most about Slack is that it maintains a good conversational history that is very useful for storing important files such as databases and programs Video calls are good and fast, sometimes even better than other video conferencing providers The classification by groups among the contacts is important to keep classified the departments and the groups of development so as to notify instantly of any novelty.,When the internet connection gets slow it is a little problematic to connect, log in and obviously make video calls. Storage is limited. When there are many files in the conversation, old messages are deleted. There should be more documentation for the Hispanic-American community.,8,It improved the communication in the organization and therefore the productivity of the work teams. Customers can communicate with consultants via video calls and feel better served by the company. Thanks to the completely free version of Slack, we managed to implement a demo without the need to make a big investment with only the minimum viable product.,AliveChat,AliveChat, Dropbox, EvernoteSlack Attack!Slack is used by my organization as an interoffice communication channel for both non-project related and some project-based communications. Slack is used across our organization but is utilized in various ways by different departments. It helps alleviate the issue of unnecessary emails and cluttering project boards/forums with communication that does not need to be there.,Slack water cooler forum is a great place for posting company and employee announcements. Creation of various slack channels is a great strength of Slack, allowing certain departments to use it for project based communication that does not need to be sent in email, and others to simply communicate with employees as needed. Another great strength of Slack is that as it grows, it can be integrated to other certain HRMS applications.,The notification system for Slack can be a nuisance at times. While it makes communication great when you are at your desk, returning to a slack/notification, and an email notification can be a bit of a nuisance and cause more clutter than it helps. A cool feature that could be made better, is the notification/reply option, but at times I can't see the message in the notification, so the reply option is pointless. If you are using the unpaid version, slack with wipe conversations, but using slack premium alleviates this, and I guess if you are not paying for the service, you can't complain about lower level functionality.,8,Great ROI! Slack has alleviated a lot of jumbled emails, and allows people to speak directly as well as become more engaged with fellow employees. The culture benefits and ability of HR to use the app for employee engagement/planning has been an unforeseen benefit that has greatly increased the ROI with Slack. When we were only using the unpaid version, some project based communication would be lost which was negative, but if you're not paying there is no investment negative ROI. Slack is definitely a useful tool, and can be great for project based communication if you use it correctly.,Microsoft Team,Wrike, RightSignature, Justworks
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2344 Ratings
Score 8.8 out of 101
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Slack Reviews

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Slack
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Score 8.8 out of 101
TrustRadius Top Rated for 2019
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Amy Sternin profile photo
July 10, 2019

Review: "Slack- a great tool and embraced by our group!"

Score 8 out of 10
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Our department of IT project development uses Slack for communication between team members. This enables us to work remotely and more efficiently, and also allows us to target communication easily to individuals as well as custom groups. The whole organization has not started using this product at this time. But every member of the IT project development team is actively using this to discuss and share project issues and concerns as well as for department announcements, and various social uses- such as lunch planning, sharing various interests and items on the internet.
  • Sending notifications when messages are sent to you.
  • Ease of user interface.
  • Ability to add and communicate to people outside of your organization.
  • Ability to share images and documents.
  • We are happy with all the funcationality in Slack.
It is especially valuable in helping with communcation between remote team members. The ability to call and share screens is really helpful, and has become our go to method to communicate, eliminating the need for skype and our various conference call systems available in our company. Using Slack for calls and meetings is now extensive within our group, and is done many, many times per day. it is easy to add people and to share and give sharing capabilities to other team members.
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Marcio Vizoli profile photo
April 10, 2019

Review: "Slack will raise the level of internal communication of your company"

Score 10 out of 10
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Verified User
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Our company was looking for a tool to standardize and centralize all internal communication. This limited the use of emails and helping to prevent conversations and exchange of confidential information of the company or projects of marketing actions and information were being exchanged free by there being able to be leaked. Slack was the choice, became the company's internal communication tool, centralized communication and also gave more agility, besides efficient, Slack proved very modern and attractive, officials love to work with it.
  • Plugins and integrations - Slack has many interesting plugins and integrations that leave the tool with the most modern air, such as the Giphy plugin that allows you to insert GIFS of reactions in your conversations only using search phrases.
  • Apps - mobile apps are not just web-based adaptations to work in a basic way, on the contrary, Apps are robust, complete and seek to use the full functionality of each mobile platform (iOS /Android).
  • Interface - Slack has a clean, modern, intuitive look and this helps to take the "weight" of the constant messaging, the employees spend hours communicating in Slack and its interface helps to make this journey lighter and more pleasant.
  • The sorting of channels - it's a bit confusing, could be better sorted, it would make it easier to search and make it more agile.
  • Search - It could also improve, it is not bad, but in some cases (rare) it is difficult to find the term that you want.
  • Heavy performance in other operating systems - At least in Linux, Slack seems to do a little more machine performance than when it is used on a computer running Windows.
If you are looking to centralize, standardize your internal communication, give it more security and agility, Slack is a great choice, adapting to it is super fast, its implementation is easy, employees love working with slack, so if you have a company with an average number of employees or have branches in different places, or if you need an internal communication tool, it's a chance to Slack.
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Divesh Kumar profile photo
May 15, 2019

Slack Review: "Great communication tool within an organization"

Score 9 out of 10
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Verified User
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Slack in used in our organization as a messaging platform over the web, where we connect with our colleagues and share information i.e, files, documents, pictures, etc. Slack is an alternative to most of our bcc's and cc's mail. It is used across the whole organization. Through Slack, we form a small group while working on a project, we do this for quick and easy passing of information.
  • Easy to use. Nice UI and UX.
  • Get a notification for every message that we receive.
  • Can form a small group to communicate with others while working on a common project.
  • No automatic messaging send option available.
  • Sometimes message notifications are received with some delay.
It is best suited in all sorts of organization, small or big, it well suited in all firms. Its best use is that it can be used to form a group for communicating with our colleagues while working on a common project. It also can be used as a reminder for our important stuff.
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Dhruba Jyoti Nag profile photo
March 08, 2019

Review: "Slack, a best-in-class collaboration tool"

Score 10 out of 10
Vetted Review
Verified User
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Slack is a collaboration software used by our client. It is a truly amazing piece of collaborative software which has so many features. On top of that, it is extendable and add-ons can be installed to integrate new features. It is also easily integrated with microservices to provide alerts using hooks.
  • It is amazing, if not the best at what it does.
  • It is extensible, many features can be integrated with this.
  • It helps organize our workspace.
  • Slack has very little room for evolvement, it has almost done everything perfectly.
  • It has an initial learning curve since it is different from other messaging apps.
  • It can be a little resource intensive but given the features, it is hardly surprising.
Slack does most things right. It is honestly one of the best collaboration software available. It has both web versions and an easy to use and install client application. It is extensible with a huge number of add-ons and the list is still growing. It can be integrated with many third-party systems quite easily. It also helps organize our workspaces efficiently.
Read Dhruba Jyoti Nag's full review
Travis Brown profile photo
March 04, 2019

Slack Review: "THE office communication software you can't live without."

Score 10 out of 10
Vetted Review
Verified User
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We use Slack as a primary communication tool within our organization. Being able to assign channels to group conversations, as well as instantly communicate with colleagues makes it an ideal tool for our organization. With remote employees, Slack is especially helpful at keeping everyone on the same page without having to sift through a ton of email for quick questions or just friendly chat.
  • Communications
  • Grouping Conversations
  • So far, none. Slack has been great.
  • The best intra-office communication tool available, hands down.
  • This is the best tool you are going to find for communicating, grouping chat channels, and getting your team on the same page.
Read Travis Brown's full review
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April 01, 2019

Slack Review: "Great for inter-office communication!"

Score 8 out of 10
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Verified User
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We use Slack to communicate with each other inside the office as an alternative to email. We also still use email, but typically for more formal requests, or if documents need to be attached. Slack is a great communication tool because anyone can create a topic-specific 'channel' and make it either an open or closed channel. This makes it very easy to find specific conversations, or have a quick, informal chat with someone in the office.
  • The user-interface is very friendly and well laid out. Its intuitive to learn how to switch between channels, find new channels, and direct message individuals.
  • There are a lot of fun GIFs, emojis, and other 'reactions' that can be used.
  • Sometimes it can be hard to search for a specific piece of information across all the channels you're a member of. For example, if there was a particularly useful link that one person shared but you don't remember which channel it was in, it can be a little difficult to find.
Slack is very well suited to informal, quick, and friendly online office interactions. It is a way to have concise (or longer) conversations without the formality of emailing. It is also much faster to quickly send a message in Slack to someone than take the time to email them. I've found that Slack is less well suited when reaching out to someone in a more formal capacity, or when large documents, power points, etc need to be shared.
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May 13, 2019

Review: "Slack Opens Communication in Our Company"

Score 10 out of 10
Vetted Review
Verified User
Review Source
Slack is being used by our entire organization to stay up-to-date on company/office-related items. We also use Slack on our team for quick updates. Slack has also been great to increase communication between the sales and marketing teams for one-off questions or support requests.
  • Allowing team members to stay in close communication.
  • Allowing employees to ask questions that can be answered quickly.
  • Allowing employees to connect on non-work-related items (improves company culture and morale).
  • Possibly include more training opportunities for users.
  • Improved integrations with other software.
Slack has been great to use and is an integral part of our team and company's functionality. It's better suited for quick check-ins and questions rather than more complex questions that require a more in-depth answer that would be better suited for an email or in-person meeting. This is ultimately up to the user to determine, though.
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Jennifer Pardi-Cusick, MBA, PMP profile photo
November 12, 2018

Slack Review: "Fun, fresh communications"

Score 10 out of 10
Vetted Review
Verified User
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Slack is used across our organization, in addition to other messaging software, to connect individuals and make it easy to communicate. Most people prefer Slack over the other available tools because of its ability to save messages and files in an easy, unobtrusive way, as well as for the "fun" aspects of it that make communicating at work enjoyable.
  • Slack enables us to use fun functions such as "/giphy" to make our communications more fun and casual. GIF wars end up bringing our department closer and injecting team spirit and humor into what could normally be stressful days.
  • Slack is also great for creating quick, temporary groups. It's nice to be able to get a group message going and then have the option to just stop using it or to convert it to a private channel later.
  • One of the best things is how Slack saves message history. You can close any DM, including group DMs and then pull it back up later. This enables you to save the information and history without having a cluttered list of interactions.
  • It's a minor point and one that's likely outside of Slack's core competencies, but if you're looking for a communication tool that also includes voice chat, this isn't it.
Slack is great for use on teams, where quick and casual communication is appropriate. It's easy and enjoyable to communicate with this venue. I could see it working amazingly for startups and smaller teams throughout all levels of the organization but I think for larger organizations with a more formal hierarchy, this tool might not get used across levels as much.
Read Jennifer Pardi-Cusick, MBA, PMP's full review
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December 06, 2018

Review: "Slack is an app that's totally not Slacking"

Score 10 out of 10
Vetted Review
Verified User
Review Source
We use Slack for all of us to communicate, collaborate, and stay updated on pushes from our Git repository. It's been useful to send data to and notify us on a regular basis so that we are all on the same page. Everybody currently uses it at our company but a majority of the posts come from our software engineers.
  • The ability to search ALL messages and files with it's powerful search bar.
  • The integrations that are possible with their API, creating endless bots that can be of useful to companies.
  • Being able to share files inside this application quickly and swiftly with the team.
  • Easier video/conference chat calls
  • Drop in/out voice channel like Discord
  • More customization to make it feel more comfortable for each workplace
I very strongly recommend Slack towards tech companies and less towards general small businesses. It has a lot of powerful features that can be used but it can be very overwhelming if you really don't need them all.
Read Christopher F. Arnold's full review
Ana Fernández Silva profile photo
October 19, 2018

Review: "Slack is a useful tool for organising projects"

Score 9 out of 10
Vetted Review
Verified User
Review Source
Slack is used in smaller groups within departments. It helps to address the lack of communication after work or when we are out of the office. We use it to organize and advertise meetings and share information about news that might be of the group´s interest. In addition, it is very useful when it comes to asking a question to specific members of the group.
  • The structure in channels allows us to keep conversations organized
  • The easy integration with bots. This is very useful for us when someone updates a repository.
  • It is a very intuitive tool.
  • Sometimes we experience some connection issues
  • Notifications across devices are sometimes missing
  • The search function can be improved, especially when we are trying to recover an old conversation
Slack fits very well on on-going projects. Also, it comes very handy for developers and coders since they can notify each other when some of them just made an update. It is less appropriate in classic office environment since the communication usually is one to one in person. Although it is most used in a professional environment, a lot of students make the most of this tool.
Read Ana Fernández Silva's full review
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October 16, 2018

User Review: "Slack - The ultimate IM Software"

Score 10 out of 10
Vetted Review
Verified User
Review Source
We use Slack as a way to communicate between our 4 offices. All departments use and new staff are trained on it. The option to have separate channels makes it really easy to find updates by department or team or by office.
  • Channels - We really like having specific channels by office and one that includes all employees. This is great for when specific events are happening or if an employee fields a call from another office and needs to look for another employee to field it too. Communication has really increased with these options
  • Fun - The option to add gifs makes it fun to IM people. Also being able to add emojis adds another level of fun. We can "vote" on posts with our "reactions". It makes it much easier to understand people's tone when you have someone adding a fun gif at the end of a message.
  • Notifications - The various options of getting notified on messages really is handy. You have it where you can do pop ups or someone can @ you in a message and a subthread comes up. Also the option for notifications to come to your phone is great for offsite employees.
  • It took me a while to figure out how to share a screen. The call button wasn't very obvious to me that I had to click that before I could share a screen.
I think the program is much better than some other IM softwares our company has tested out. It's well suited for cross office communication and inter office communication. It has options such as attaching a document, sharing photos, voting, the fun aspect. It's a well rounded program and I'd highly recommend it for a company that has more than 20 employees.
Read Alissa Levanway's full review
Matthew Berry profile photo
October 16, 2018

User Review: "Slack makes communication easy"

Score 10 out of 10
Vetted Review
Verified User
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We use Slack throughout our entire organisation. It's an incredible piece of software which makes segmenting announcements a simple & effective process. One of the most attractive features that this software provides is the ability to integrate seamlessly with many third party software vendors, making the benefit two-fold.

It's thanks to integration potential that we're able to schedule alerts, announcements, birthday reminders and more all in one central location.
  • Slack provides the ability to create to-do list style reminders at specific times & recurring intervals.
  • Slack makes direct messaging, announcements & communication in general easy.
  • Slack provides a great way to get to know your colleagues & have a transparent conversation history.
  • There's a slight learning curve involved with the reminder interface.
  • Offline chat is problematic & LAN sync not always effective.
  • Private channels can clutter up your work-space pretty easily, so be sure to restrict access.
Slack is ideal for company-wide correspondence, announcements & reminders. I wouldn't specifically recommend Slack as a direct messaging software replacement, though it definitely has merit in its ability to bring groups of individuals together & set up reminders for specific tasks in departmentally focused channels. The free version of the software is excellent, too.
Read Matthew Berry's full review
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September 24, 2018

Review: "Slack is an amazing chat system for mid to large sized businesses"

Score 10 out of 10
Vetted Review
Verified User
Review Source
Across the whole organization- but the ease of quickly containerizing groups and issues is how we use it. So departments can have their own space, and groups can be created on the fly for quick solutions or brainstorming. It's a cool, and also fun tool for communication. Huge upgrade from other ways to chat.
  • Securely containerize group chats for organization of needs.
  • Share files and data internally for quick collaboration.
  • Real-time notifications for important pieces of information to be able to act or respond directly when necessary.
  • The sorting of channels is not my favorite. There are ways but definitely needs improvement.
  • Search is clunky. Not bad, but I find the UI for that piece to be a bit overwhelming.
  • Apps is a section I haven't delved into. Sounds like there are cool things to do or integrate, but its not advertised well.
It's an amazing communication tool. Does what your average IM system would do, but adds details to make it a better user experience while making it fun with images/gifs etc

If you simply need chats, and no images/doc sharing/search capabilities, you'd be fine with another tool.
Read Matthew Vita's full review
Miroslav Bobryshev profile photo
August 10, 2018

User Review: "Slack's power."

Score 7 out of 10
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Verified User
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Slack is used across the whole organization for communicating with every professional. It is the easiest way to discuss work tasks.
  • When discussing, you can attach images. Slack gives enough space for files to share.
  • You can create a separate chat for each topic.
  • There is integration with a large number of external services like Trello.
  • Each team member receives notifications only about those messages that are addressed specifically to him.
  • API as a whole is very poor. API does not provide the ability to customize widgets in the chat.
  • Linux clients use memory very intensively.
  • Proprietary application (not free for distribution).
Communicating in Slack, we can discuss with a texturing artist some questions about the 3D Character, in the process of discussion, which raises a question to the Modeler. And you can just call him to take part in the discussion - "@Modeler, have you done the Character?". He gets a call directly to himself, can read the history of our correspondence and clearly respond.
Read Miroslav Bobryshev's full review
FRANCISCO GUTIERREZ profile photo
September 07, 2018

User Review: "My performance with Slack is good."

Score 10 out of 10
Vetted Review
Verified User
Review Source
Slack is a tool designed to create and establish strategies to guarantee a good service to your colleagues, clients and friends. Since we implemented this tool, the important advances we have obtained are reflected in the satisfaction of having accurate and quality information at hand. Slack has helped us to organize a myriad of tasks that relate to my activity itself.
  • It is a very easy tool to use and integrate with other platforms.
  • Establish internal chat groups to review work issues.
  • Make video calls and connect with some friends to take opinions about what I'm doing.
  • The interconnectivity with some applications or tools are not very good.
  • Search engine and update.
  • Very low user login design.
With this tool it is easy to have multiple things at hand at the same time. You can integrate one tool with another in order to share information and data quickly and safely without the need to have the tool installed on your device. The speed with which you work is phenomenal and comfortable.
Read FRANCISCO GUTIERREZ's full review
Paul Jordan profile photo
September 07, 2018

User Review: "Slack is the Standard"

Score 10 out of 10
Vetted Review
Verified User
Review Source
It is used across the whole org as well as within each dept separately. Huge help with the ability to have archives of shared knowledge that may fall through the cracks when employees leave or transition to new roles. In addition, it streamlines collaboration that is transactional in nature, saving time to do more important work. The emojis are surprisingly helpful with reporting.
  • Ease of communication.
  • Seamless experience across devices.
  • Enjoyable to use.
  • The search function could be improved for scope.
  • Can get hectic.
  • Would like ability to control privacy of messages more fully.
When collaborating with peers in different offices, floors, countries it provides a seamless experience that nurtures collaboration. It is very helpful in bucketing internal issues in different rooms and then segmenting a response based on those.
Read Paul Jordan's full review
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August 03, 2018

Slack Review: "Great for communication across offices."

Score 8 out of 10
Vetted Review
Verified User
Review Source
[It's being used] Across the whole organization - great for working internationally. All of our team members use it daily to talk about projects, send files from Word docs to images, integrate with Hubspot, etc.
  • Quick communication
  • Categorizing conversations and projects
  • Communicating across offices
  • Desktop notifications can be distracting
  • Great for working with remote employees.
  • Not great if you want to not get distracted easily.
Read Denise Martinez, MBA's full review
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January 02, 2019

User Review: "Slack Is Incredible And Efficient"

Score 9 out of 10
Vetted Review
Verified User
Review Source
Slack is used as means of communication by us and clients as well by our colleagues. It is used by a department only. It's reduced our internal email. All our work is now done at a faster rate than before due to faster communication. In my opinion, it is way faster than Skype for Business.
  • It's reduced our internal email.
  • Cost management.
  • Slack provides a much better system to communicate with your clients as well as your colleague. You can directly communicate with your clients using Slack.
  • Cannot preview document without downloading.
  • Need a feature of video conferencing as well.
Sometimes we need urgent help/suggestion from our colleagues or just from clients. So, using Slack we can immediately contact them and get our issue resolved. You can also create a group and get help from several members as well.
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October 29, 2018

Slack Review: "The Bee's Knees"

Score 8 out of 10
Vetted Review
Verified User
Review Source
I use Slack to communicate with my colleagues. I also use slack to track incoming requests from different teams across the organization and to transfer large files that may be too large for email to handle. So many features and the file sharing absolutely key as Outlook sends so many issues with file storage.
  • Easy to use
  • Many apps for integration
  • The mobile app experience is great and has nice notification features
  • Doesn't completely kill email as there are other colleagues in the organization who aren't using slack
  • A little bit steeper of a curve to pick-up on, but so powerful once the team is on board
If you have multiple groups that you want to keep in the loop but not necessarily in the communication the concept of channels are perfectly suited.
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August 10, 2018

Slack Review: "Great collaboration tool"

Score 8 out of 10
Vetted Review
Verified User
Review Source
Slack is being used company wide as the main internal communication and collaboration tool
  • Conference calls
  • Team collaboration
  • Easy to share files and write bots to automate proccesses
  • Bots only available to admins
  • Need to make easier for conference calls with multiple people
  • In chat mode people disappear from your list if you have not talk to them for a while
I think the product is going in the right direction with multiple integrations for different use cases within the workplace
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Joshua Weaver profile photo
March 16, 2018

Slack Review: "One Chat to Rule them All, and in the Loudness Bind them"

Score 8 out of 10
Vetted Review
Verified User
Review Source
  • We currently use slack at our organization for our main non-verbal internal communication.
  • We've tried to mitigate our reliance on email internally as we used to see emails slung around without much thought. Now we just fire off a quick message.
  • We have some remote employees communicate with Slack as a primary internal communication tool.
  • Additionally we utilize a third-party chat solution for a product site that allows end-users to communicate with us via slack. They don't know they are talking to us via slack but the chat widget integrates with a specific Slack channel. Slack is flexible in this way.
  • We use slack to send us reminders to follow-up with customers and leads by way of a scheduled notification/reminder from our internal custom CRM
  • We will toss files back and forth at times when we need to share something quickly
  • API Integrations
  • 3rd Party Support
  • File/Image support
  • Mobile App works well
  • Audio and Video Calls
  • Text formatting and Code sharing (for developers)
  • Notification Options
  • Performance can be slow at times
  • Using slack creates a reliance on it - like any social media, feeling that you may fall behind if you don't view it for a time
  • It can be easy to miss messages if they're not directly addressed to you (which many users may forget, although this is hardly a fault of slack — they do their best to balance message notification configuration with options)
I think slack is great for smaller teams. In a larger setting, I would be worrisome that it would devolve into a cacophony of noise. This could also be overwhelming to some individuals.
I'm involved in several other slack groups in the coding community and they can get rather busy quite quickly. Since our company is somewhat small, I feel like it fits us pretty well and remains manageable and easy to keep up with.
Read Joshua Weaver's full review
Brent Lionel Mausisa profile photo
May 18, 2018

User Review: "Slack is best for the non-Slackers!"

Score 8 out of 10
Vetted Review
Verified User
Review Source
I'm using Slack now with two of my existing clients. One from Australia and one from the US but currently based in Singapore. Slack helps to group our messaging accordingly and retrieve messages to a certain point. I love using Slack because it removes the noise that's available on Skype.
  • Slack allows you to focus on work-related messages only.
  • Slack allows you to notify relevant people who're part of a channel or group messaging.
  • Slack gives you to the ability to track back your previous messages to the group or to a particular person.
  • Slack should improve it's video call features. It had failed many times based on my experience.
  • Slack should include options so the sender will see if the person messaged have seen the message or not yet.
  • Slack should improve it's current user interface too so it looks better.
Slack is very appropriate for team or company messaging. It allows the entire team to be updated and in the loop for any updates. However, it's usually good for chatting purposes. Their voice and video call features are not that good based on my experience.
Read Brent Lionel Mausisa's full review
Ronald Melendez profile photo
May 13, 2018

"Slack Review"

Score 9 out of 10
Vetted Review
Verified User
Review Source
Slack is perfect for working with computers remotely. In my case I used it in a company where we worked remotely, and it works perfectly, has many functions, and the best thing is that the mobile app works wonders. You can chat with your team work constantly and keep your group organized. Besides that you can share many things in a conversation, you can also activate notifications, on the desktop and always be attentive to your chats. I've also used it to conduct remote conversations and inductions through a slack chat since you can share different types of files and it's pretty good
  • Mobile app works perfectly
  • Integration with 3rd party app
  • You can share code snippets for developers
  • Instant messaging, with many people at the same time
  • Does not allow to make video calls
  • Does not show the last time the user was active
  • High influence on the border of belonging to comparison groups
  • The notifications can be very distracting
It can improve the performance of the team, and can also save a lot of time. Because of Slack there are no meetings or lost time, as it targets specific issues, and everyone is from your job, you do not need a conference room for a meeting.

It's perfect for remote teams; everyone can contribute ideas and participate, using instant messaging so there is no need to use corporate emails within Slack. You can attach almost everything and you can receive all your colleagues in real time.
Read Ronald Melendez's full review
Richard Molina profile photo
May 03, 2018

Slack Review: "The best way to maintain optimal communication in the company."

Score 8 out of 10
Vetted Review
Verified User
Review Source
I use slack to communicate with all the members of the departments and programmers of the different projects of the company.
It is an excellent application and is the one that we use even for conferences and video calls since it works quite well.
The history that is kept for all conversations is quite useful because, thanks to that, we keep a record of everything we talk about in the company.
The groups are also quite useful and we use them to divide the company into departments.
  • What I like most about Slack is that it maintains a good conversational history that is very useful for storing important files such as databases and programs
  • Video calls are good and fast, sometimes even better than other video conferencing providers
  • The classification by groups among the contacts is important to keep classified the departments and the groups of development so as to notify instantly of any novelty.
  • When the internet connection gets slow it is a little problematic to connect, log in and obviously make video calls.
  • Storage is limited. When there are many files in the conversation, old messages are deleted.
  • There should be more documentation for the Hispanic-American community.
I like to laze because it is quite stable, it can easily be all day connected to a working day and does not present any type of failures.
Read Richard Molina's full review
James Weiss profile photo
March 05, 2018

User Review: "Slack Attack!"

Score 8 out of 10
Vetted Review
Verified User
Review Source
Slack is used by my organization as an interoffice communication channel for both non-project related and some project-based communications. Slack is used across our organization but is utilized in various ways by different departments. It helps alleviate the issue of unnecessary emails and cluttering project boards/forums with communication that does not need to be there.
  • Slack water cooler forum is a great place for posting company and employee announcements.
  • Creation of various slack channels is a great strength of Slack, allowing certain departments to use it for project based communication that does not need to be sent in email, and others to simply communicate with employees as needed.
  • Another great strength of Slack is that as it grows, it can be integrated to other certain HRMS applications.
  • The notification system for Slack can be a nuisance at times. While it makes communication great when you are at your desk, returning to a slack/notification, and an email notification can be a bit of a nuisance and cause more clutter than it helps.
  • A cool feature that could be made better, is the notification/reply option, but at times I can't see the message in the notification, so the reply option is pointless.
  • If you are using the unpaid version, slack with wipe conversations, but using slack premium alleviates this, and I guess if you are not paying for the service, you can't complain about lower level functionality.
Slack is great for company-wide announcements, starting groups, coordinating events, and really good for engaging employees across the organization. It is a great way to bring people together as well, despite being a digital forum. Due to Slack, our employees are more in tune with each other and actually spend more time together outside of work engaging each other. Project-based communication is not as useful, but it can be done as well.
Read James Weiss's full review

Feature Scorecard Summary

Task Management (54)
7.5
Gantt Charts (18)
6.9
Scheduling (37)
7.7
Workflow Automation (45)
6.5
Mobile Access (97)
8.8
Search (96)
7.7
Visual planning tools (22)
7.3
Chat (106)
9.4
Notifications (105)
8.8
Discussions (102)
9.2
Surveys (43)
7.4
Internal knowledgebase (47)
8.6
Integrates with GoToMeeting (27)
8.0
Integrates with Gmail and Google Hangouts (46)
8.0
Integrates with Outlook (22)
7.7
Versioning (36)
7.5
Video files (74)
7.9
Audio files (74)
8.0
Document collaboration (60)
7.4
Access control (56)
8.5
Advanced security features (44)
8.3
Integrates with Google Drive (53)
8.4
Device sync (61)
8.6

About Slack

Slack is a group messaging or team collaboration app that aims to simplify communication for businesses. Features include open discussions, private groups, and direct messaging, as well as deep contextual search and message archiving, and file sharing. Slack integrates with a number of other tools, such as MailChimp, Dropbox, and Google Drive.

The product is free to use, and also has paid plans with more features and greater controls.

The company has raised $340M in funding and boasts 800k users.

Categories:  Collaboration

Slack Integrations

Slack Competitors

Slack Technical Details

Operating Systems: Unspecified
Mobile Application:No