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Starting at $0 per month per user
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What is 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…

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Recent Reviews
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Products that are considered exceptional by their customers based on a variety of criteria win TrustRadius awards. Learn more about the types of TrustRadius awards to make the best purchase decision. More about TrustRadius Awards

Popular Features

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  • Chat (416)
  • Mobile Access (393)
  • Discussions (403)
  • Notifications (412)

Reviewer Pros & Cons

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  • Free Trial
  • Free/Freemium Version
  • Premium Consulting/Integration Services
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Project Management

Project management software provides capabilities to streamline management of complex projects through task management, team collaboration and workflow automation

Avg 7.9


Features that allow team members to communicate about collaborative projects and keep each other informed of their opinions and progress.

Avg 8.0

File Sharing & Management

Features that allow collaborators to view, work on, and organize files.

Avg 8.1
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Product Details

What is Slack?

Slack is a Digital HQ
As the command center of the workday, Slack provides a flexible way to work with people, apps and partners in one space.

The new space for success
Slack connects people with each other and with their tools and data, equipping teams to be productive and open up opportunities.

Transform Teamwork
Working together in channels—dedicated spaces built around specific projects and initiatives—keeps the right people and information in one place.

Embrace Flexibility
Huddles let teams chat over audio instantly, with the option for video and screen sharing with the tap of a button.

Work Faster
With clips, teams can create audio, video and screen recordings to share updates, walk through demos or talk out an idea with more clarity (and personality).

Extend Collaboration
Slack Connect lets users work alongside external partners and customers in Slack channels, to speed up projects and strengthen relationships.

Integrate Tools
From project management tools to a daily calendar, Slack integrates with more than 2,400 applications.

Automate Tasks
In Slack, users can turn routine meetings and tasks like standups, approvals and requests into automated workflows.

Slack Features

Project Management Features

  • Supported: Task Management
  • Supported: Scheduling
  • Supported: Workflow Automation
  • Supported: Mobile Access
  • Supported: File tracking
  • Supported: Tagging
  • Supported: Search
  • Supported: Integrates with other Project Management Tools
  • Supported: Visual planning tools

Communication Features

  • Supported: Chat
  • Supported: Status updates and activity feed
  • Supported: Notifications
  • Supported: Comments and feedback
  • Supported: Discussions
  • Supported: User directory and online status
  • Supported: Sharing and privacy
  • Supported: Surveys
  • Supported: Internal knowledgebase
  • Supported: Integrates with Skype
  • Supported: Integrates with GoToMeeting
  • Supported: Integrates with Gmail and Google Hangouts
  • Supported: Integrates with Outlook

File Sharing & Management Features

  • Supported: Versioning
  • Supported: Document files
  • Supported: Image files
  • Supported: Video files
  • Supported: Audio files
  • Supported: Document collaboration
  • Supported: Shared folders
  • Supported: Access control
  • Supported: Advanced security features
  • Supported: Integrates with Google Drive
  • Supported: Integrates with SharePoint
  • Supported: Device sync
  • Supported: Web interface
  • Supported: File change notifications
  • Supported: Simultaneous editing

Additional Features

  • Supported: Audio Conferencing
  • Supported: Video Conferencing
  • Supported: Sales Enablement
  • Supported: Unified Communications as a Service
  • Supported: Meeting Management
  • Supported: Encrypted Communications

Slack Integrations

Slack Technical Details

Deployment TypesSoftware as a Service (SaaS), Cloud, or Web-Based
Operating SystemsUnspecified
Mobile ApplicationNo

Frequently Asked Questions

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. Slack was acquired by Salesforce in December 2020. 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 starts at $0.

Microsoft Teams, Google Chat, and Discord are common alternatives for Slack.

Reviewers rate Chat highest, with a score of 9.7.

The most common users of Slack are from Mid-sized Companies (51-1,000 employees).
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Reviews and Ratings


Attribute Ratings


(1-25 of 416)
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Score 10 out of 10
Vetted Review
Verified User
  • Huddles
  • Notification preferences
  • integrates with other softwares like tickets, zoom, and Google Calendar
  • automatically mute my notifications if my Google Calendar says i'm in a meeting
  • reply reminders like in gmail if you haven't responded to a Slack that you opened days before in case you forget
Score 7 out of 10
Vetted Review
Verified User
  • Organized chats
  • Search feature with advanced filters
  • Custom layouts
  • APIs with other apps for seamless integration
  • Syncs with my calendar to provide reminders
  • Clearer step-by-step instructions on setting up integrations
  • Easier 'reminder' features for responding to messages
Score 10 out of 10
Vetted Review
Verified User
  • Chat - at this point I can’t think of a single additional feature needed for the basic chat function. They have nailed it.
  • Integrations - many services and applications can be integrated into Slack to simplify communications and notifications
  • Channels - channels allow us to keep conversations focused
  • I really don’t have any, Slack is an exceptional tool
Score 9 out of 10
Vetted Review
Verified User
  • Communication with members of a project ( via channels features where you can create specific dedicated groups for project members only)
  • Third-party app integration ( Integration with Asana, Gmail, Jira, GIFy, etc.)
  • Daily Huddles - This has been one of the latest addition to the features, and this has been liked by all of our team members. It makes running daily huddles super easy, considering the WFH environment that we are in.
  • UI - User interface is generic, and I believe Slack has a huge room for improvement to make it more interactive and friendly.
  • If you use the search option on Slack, it gives results from open groups as well. Since the groups are open and not locked, it's okay to display the results, but I feel those results should not appear as there might be some of the pre-development confidential ideas which are not supposed to be shared with a large audience.
  • Display of Profile status - Currently, you have to hover over the profile to know the status, but it would be quite useful if we have a small line just below the name, and it appears during the conversation too. The reason I feel it would be a good change is because we use it to display our leaves as well, and if the status is visible easily, people can know about our availability
Score 7 out of 10
Vetted Review
Verified User
  • Collaboration
  • Quick communication
  • Integration workflows
  • Slack desktop is slow when changing channels
  • Searching is sluggish and could use improvement
  • Needs more controls over statuses, alerts, and a focus mode
Score 10 out of 10
Vetted Review
Verified User
  • Channels for discussions
  • Ability to remind and schedule messages
  • Ability to deal with multiple communities
  • Huddle often has some or the other issue with respect to connectivity
  • Searching within threads can be nightmare. Message which are several weeks old are really hard to find.
  • The FTUX can be better. Hard to find keyboard shortcuts for frequently used functions.
Score 10 out of 10
Vetted Review
Verified User
  • Organize threads of project content - WAY easier than having multiple emails
  • Provide the ability for others to observe communication on projects or topics that they aren't directly involved in
  • Create a space to share universal business announcements
  • Create spaces for topics that are fun
  • We have issue with people not posting on main topics in the comment thread- which can cause things to get disorganized. Not sure how you can help change this user behavior, though. Could we move the location of a comment?
  • We're a small business and it's mostly self-serve - but I would like to encourage our tech lead to revisit tips and tricks every now and then to make sure people are making the most of it. I bet there are features we don't even realize are there. Seems like something you could also email individual users?
  • My channel list gets VERY long, and some are dormant for long periods of time but I don't want to get rid of them. Again, I think there are solutions but when you're working fast against a high volume of demands it just gets overwhelming. Is there maybe a prompt you could build in to remind us to put quiet channels in another section or something like that?
Score 10 out of 10
Vetted Review
Verified User
  • Ease of use
  • Speed and efficiency
  • Customer service
  • No downtime
  • Variety of ways to interact and connect
  • Multiple tools for collaboration beyond messaging
  • Quick video/voice chats through Huddle feature that work really well
  • Too many features tied to Enterprise level
  • Expand the Later feature for better project management
  • Multiple tiers of Slack AI for those that can't afford what is there currently (which is more than the cost of the Pro plan itself). Teams AI is way cheaper
  • Native survey feature instead of relying on third-party
  • Video conferencing that can be scheduled, similar to Teams or Zoom. Huddles are great, but in order to replace Teams entirely, this is critical
Score 10 out of 10
Vetted Review
Verified User
  • Easy to use
  • Integration with systems
  • Pre-schedule messages to get items off my plate
  • I would like to create more dynamic Polls within sub-groups
  • Groups are limited to 9 people and you're forced to create a channel. Sometimes, that isn't the greatest approach
  • The external connections feature is a little difficult to set up
Score 10 out of 10
Vetted Review
Verified User
  • Direct Communication between people
  • Separates your work-life messages
  • Keeps history of conversations and files
  • Integration with bots and other platforms
  • Threads
  • Automations
  • The order of chats and channels
Score 9 out of 10
Vetted Review
Verified User
  • Setting up quick meetings via huddle is the favorite feature. It instantly opens door for quick and ad-hoc communications very well and is a pretty useful feature.
  • I am using notes feature recently very often to keep track of the important action items for the day, saving key credentials that are to be shared across the teams and I replaced my personal dm for storing drafts with the notes functionality.
  • Catch-up feature on the desktop app is also pretty useful to quickly go through all the pending messages and very thoughtful feature from Slack, it keeps me upto date and saves time at the start of the day.
  • Remind me later is something I use pretty often, I may not be able to work on that but definately wants to go through it in detail and respond, then this feature comes very handy to keep check on such messages and helps us not get lost especially when working across teams.
  • I observed that when a huddle is initiated and if the other person joins right instatly it sometimes won't establish the connection and I could not be heard by the others or viceversa and often requires them to rejoin.
  • Searching also becomes a bit challenging, it would be good if there's a date range filter to check the messages from a specific date range as often times it's very hard to find those months back messages.
  • Despite Slack helping for ad-hoc meetings and quick un-planned conversation, it would be good if there's an option to set-up automated recurring meetings like we have daily stand-ups for that we had to set-up a google calendar invite just that it sends remiders and keep things organised. Fun fact we still use huddle to make these stand-up calls but google calendar is used to remind us of this as a placeholder.
  • I read about AI integration but yet to experience it, otherwise having an AI bot to help around within Slack could really help, currently before sending important messages I am taking the content to gemini or chatgpt for corrections and correctness and pasting it back on Slack, an integrated AI system would help in getting this done within the Slack.
Score 10 out of 10
Vetted Review
Verified User
  • Multiple projects group can be created and managed seamlessly
  • Ease of communication between different project stakeholders
  • Ease of sharing files and linking with external softwares like jira
  • One major issue i encountered multiple times was in receiving the OTP while creating an account. It takes too much time, and sometimes the verification OTP didn't even come the whole day on the mentioned email id.
Score 10 out of 10
Vetted Review
Verified User
  • UI is very user friendly and intuitive
  • Huddle feature in Slack saves a lot of time in organizing and sharing links to connect. It comes as a saviour especially when adhoc calls are needed for short durations.
  • Ability to segment groups based on your criteria.
  • Huddle while a great feature often has issues in terms of connectivity. At least once a week, I face an issue when I am not able to hear the other person or vice versa. Slack can work on improving this further.
  • Slack should have an option to add color to FONTS or increase or decrease the font size. I sometimes feel that I have to use the CODE option to mark lines in RED that need attention.
Score 10 out of 10
Vetted Review
Verified User
  • I can see the entire history of all the messages I ah exchanged with a person. I can also have access to all the files we have shared between each other.
  • It helps me create groups which facilitates collaboration between multiple stakeholders.
  • I can huddle anyone at anytime and the audio is very clear. I have the ability to share my screen as well, which is very helpful.
  • I can set reminders to messages and Slack reminds me about them.
  • Slack needs to have a task management tool also. This would be very helpful to keep track of my tasks as well as keep a check on my team members tasks.
  • I am not aware of many of the automations that can be used in Slack. Conducting educational sessions and providing demos about features would help in adoption of them.
  • Sometimes huddle does not work as expected. I witness some glitches where my screen is not shared. But this happens rarely.
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