TrustRadius: an HG Insights company

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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Rakuten Viber

    Score9.3 out of 10
    N/AViber, now from Rakuten (acquired 2014) is an instant messaging and cross-platform VoIP software solution designed for personal use and available for both desktops and as a mobile app. It includes features such as video and audio calls, instant message, and unlimited-member group chats. Users can also make paid international calls.

    $0.02

    Per Minute

    Slack

    Score9 out of 10
    N/ASlack 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…

    $8.75

    per month per user

    Pricing
    Rakuten ViberSlack
    Editions & Modules
    USA
    $0.019
    Per Minute
    UK
    $0.019
    Per Minute
    Free
    $0
    Pro
    $7.25*
    per month per user
    Business+
    $12.50*
    per month per user
    Enterprise
    Contact Sales
    Offerings
    Pricing Offerings
    Rakuten ViberSlack
    Free Trial
    NoYes
    Free/Freemium Version
    NoYes
    Premium Consulting/Integration Services
    NoNo
    Entry-level Setup FeeNo setup feeNo setup fee
    Additional Details—*Per active user, per month, when paying once a year. Pro is $8.75 USD per active user when paying month to month. Business+ is $15.00 USD per active user when paying month to month.
    More Pricing Information
    Community Pulse
    Rakuten ViberSlack
    Considered Both Products
    Rakuten
    Chose Rakuten Viber
    Skype's user interface is really glitchy and doesn't provide same functionality in terms of fun elements - emojis or gifs. Slack is excellent communication tool but as well doesn't provide fun elements as Viber does(emojis, memes, gifs and more). I should also mention that …
    Incentivized
    Chose Rakuten Viber
    Viber is really bad compared to Slack. It is not designed for business at all.
    Incentivized
    Chose Rakuten Viber
    Before Viber, we were using Slack. Our colleagues were using Slack only at work. But Viber is used for personal needs too. That is why we switched to Viber because we can reach to our colleagues anytime and from anywhere.
    Incentivized
    Chose Rakuten Viber
    It's faster than all of above, better for cross platform communication and unlike the above examples (Skype for Business and Slack), not directly tied to organization. Its other alternative (not listed on TrustRadius) is WhatsApp, which, in my opinion is a copy of Viber. Viber …
    Incentivized
    Chose Rakuten Viber
    Skype has UI problems and makes the fun elements such as emojis and gifs hard to use. Slack is a good communication tool but has again less fun elements and is more work-oriented so it doesn't contribute a lot to a fun working atmosphere. Whatsapp was never even in the game …
    Incentivized
    Chose Rakuten Viber
    Viber works much faster. Besides, it doesn't require a separate login.
    Incentivized
    Salesforce
    Chose Slack
    Slack is the perfect professional communication tool. One does not need phone numbers to add contacts, just create an online account with a work email address.
    Incentivized
    Key User Insights
    Would buy again
    67%
    Would buy again
    6 Answers
    97%
    Would buy again
    503 Answers
    Delivers good value for the price
    89%
    Delivers good value for the price
    8 Answers
    99%
    Delivers good value for the price
    426 Answers
    Happy with the feature set
    89%
    Happy with the feature set
    8 Answers
    98%
    Happy with the feature set
    510 Answers
    Lived up to sales and marketing promises
    No answers on this topic
    98%
    Lived up to sales and marketing promises
    295 Answers
    Implementation went as expected
    83%
    Implementation went as expected
    5 Answers
    99%
    Implementation went as expected
    330 Answers
    Features
    Rakuten ViberSlack
    Cloud PBX
    Comparison of Cloud PBX features of Rakuten Viber and Slack
    Feature
    Rakuten Viber
    9.5
    13 Ratings
    18% above category average
    Slack
    -
    Ratings
    Hosted PBX9.56 Ratings00 Ratings
    Multi-level Interactive Voice Response (IVR)9.78 Ratings00 Ratings
    User templates8.87 Ratings00 Ratings
    Call reports9.89 Ratings00 Ratings
    Directory of employee names9.78 Ratings00 Ratings
    Call Management
    Comparison of Call Management features of Rakuten Viber and Slack
    Feature
    Rakuten Viber
    9.3
    15 Ratings
    12% above category average
    Slack
    -
    Ratings
    Answering rules9.59 Ratings00 Ratings
    Call recording9.79 Ratings00 Ratings
    Call park8.84 Ratings00 Ratings
    Call screening8.89 Ratings00 Ratings
    Message alerts9.814 Ratings00 Ratings
    VoIP system collaboration
    Comparison of VoIP system collaboration features of Rakuten Viber and Slack
    Feature
    Rakuten Viber
    9.6
    13 Ratings
    19% above category average
    Slack
    -
    Ratings
    Video conferencing9.513 Ratings00 Ratings
    Audio conferencing9.713 Ratings00 Ratings
    Video screen sharing9.05 Ratings00 Ratings
    Instant messaging10.09 Ratings00 Ratings
    Mobile apps
    Comparison of Mobile apps features of Rakuten Viber and Slack
    Feature
    Rakuten Viber
    10.0
    18 Ratings
    24% above category average
    Slack
    -
    Ratings
    Mobile app for iOS10.017 Ratings00 Ratings
    Mobile app for Android10.017 Ratings00 Ratings
    Project Management
    Comparison of Project Management features of Rakuten Viber and Slack
    Feature
    Rakuten Viber
    -
    Ratings
    Slack
    7.9
    628 Ratings
    2% above category average
    Task Management00 Ratings7.6430 Ratings
    Gantt Charts00 Ratings6.961 Ratings
    Scheduling00 Ratings7.8363 Ratings
    Workflow Automation00 Ratings8.0396 Ratings
    Mobile Access00 Ratings9.4601 Ratings
    Search00 Ratings8.2608 Ratings
    Visual planning tools00 Ratings7.3275 Ratings
    Communication
    Comparison of Communication features of Rakuten Viber and Slack
    Feature
    Rakuten Viber
    -
    Ratings
    Slack
    8.7
    636 Ratings
    9% above category average
    Chat00 Ratings9.6635 Ratings
    Notifications00 Ratings8.7632 Ratings
    Discussions00 Ratings9.2620 Ratings
    Surveys00 Ratings8.1413 Ratings
    Internal knowledgebase00 Ratings7.8412 Ratings
    Integrates with GoToMeeting00 Ratings8.9110 Ratings
    Integrates with Gmail and Google Hangouts00 Ratings8.7182 Ratings
    Integrates with Outlook00 Ratings8.9120 Ratings
    File Sharing & Management
    Comparison of File Sharing & Management features of Rakuten Viber and Slack
    Feature
    Rakuten Viber
    -
    Ratings
    Slack
    8.4
    603 Ratings
    4% above category average
    Versioning00 Ratings8.2326 Ratings
    Video files00 Ratings8.2541 Ratings
    Audio files00 Ratings8.4527 Ratings
    Document collaboration00 Ratings7.9429 Ratings
    Access control00 Ratings8.3411 Ratings
    Advanced security features00 Ratings8.3362 Ratings
    Integrates with Google Drive00 Ratings9.0211 Ratings
    Device sync00 Ratings9.0455 Ratings
    Best Alternatives
    Rakuten ViberSlack
    Small Businesses
    CallFire
    Score9.7 out of 10
    Flock
    Score9.5 out of 10
    Medium-sized Companies
    Fuze
    Score8.2 out of 10
    Troop Messenger
    Score9.8 out of 10
    Enterprises
    Cisco Unified Communications Manager (Call Manager)
    Score8.3 out of 10
    Cisco Business Edition 7000 (discontinued)
    Score9 out of 10
    All AlternativesView all alternativesView all alternatives
    User Ratings
    Rakuten ViberSlack
    Likelihood to Recommend
    9.6
    (18 ratings)
    9.1
    (639 ratings)
    Likelihood to Renew
    -
    (0 ratings)
    10.0
    (25 ratings)
    Usability
    -
    (0 ratings)
    9.0
    (255 ratings)
    Availability
    -
    (0 ratings)
    10.0
    (2 ratings)
    Performance
    -
    (0 ratings)
    10.0
    (2 ratings)
    Support Rating
    9.4
    (7 ratings)
    10.0
    (68 ratings)
    Implementation Rating
    -
    (0 ratings)
    8.9
    (5 ratings)
    Configurability
    -
    (0 ratings)
    10.0
    (2 ratings)
    Contract Terms and Pricing Model
    -
    (0 ratings)
    10.0
    (1 ratings)
    Ease of integration
    -
    (0 ratings)
    9.7
    (2 ratings)
    Product Scalability
    -
    (0 ratings)
    10.0
    (1 ratings)
    Professional Services
    -
    (0 ratings)
    10.0
    (1 ratings)
    Vendor post-sale
    -
    (0 ratings)
    10.0
    (1 ratings)
    Vendor pre-sale
    -
    (0 ratings)
    10.0
    (1 ratings)
    User Testimonials
    Rakuten ViberSlack
    Likelihood to Recommend
    Rakuten
    As mentioned previously, it is easy to use and access since the you can chat, send voice memos or stickers in a conversation. So in overall it's very entertaining. But throughout that, the audio quality can seem to be a bit off. (Could be personal headset issue) Overall that is the only issue that is present or consistent.
    Incentivized
    Read full review
    Salesforce
    Slack is ideal for Scrum and agile teams that need continuous communication during sprint planning, daily stand-ups, backlog refinement, testing, and retrospectives. Slack is well-suited for maintaining team knowledge through searchable conversations and dedicated channels, where experienced team members help onboard new QA analysts.
    Read full review
    Pros
    Rakuten
    • Viber is a cross platform product. It does not matter if someone uses Android or iOS device, it will work exactly the same.
    • Also the desktop version is very good. You can switch between the desktop and mobile versions within a conversation and see updates right away.
    • It's a very international product. It has been available for very long time, which makes it very wide spread - it has a good user base.
    • You can see the status of your messages.
    Incentivized
    Read full review
    Salesforce
    • Customer issues: Threads feature allows us to group a particular issue in a single thread and discuss within that thread. I can use the thread link to embed in JIRA ticket for tracking progress in JIRA (which is our details engineering tracking system).
    • Ability to add folder to Slack channel helps keep important information, documents easily accessible. e.g., we use this to keep a "ramp up" folder that can be used by any new joiner.
    • Global search is effective when I forget which group a particular message was in.
    Read full review
    Cons
    Rakuten
    • When someone sends a file in Viber, the program automatically saves it in your phone memory. This means that you must delete them manually and it really annoys me, as it takes a lot of time to do that.
    • It contains enormous amounts of adds.
    • There is file sharing limit.
    Incentivized
    Read full review
    Salesforce
    • Would love a better integration with GitHub. For example, notifications when your PR is updated, when review is requested, @-mention in comments, etc.
    • Improved "Later" tab, for example the ability to create to-do lists or making the "Later" tab into a more powerful to-do list (annotate items with notes)
    • More powerful integrations, e.g. Google Calendar could render a calendar view within Slack, rather than sending the daily schedule
    Incentivized
    Read full review
    Likelihood to Renew
    Rakuten
    No answers on this topic
    Salesforce
    To be more transparent, I give 10 because Slack serves our collaboration needs. It provide us a good platform for team communication relaying important update within the company, it has even mobile app where you can install in your phone to monitor any updates within that team that needs your immediate attention and intervention.
    Incentivized
    Read full review
    Usability
    Rakuten
    No answers on this topic
    Salesforce
    Slack has good usability. Devs that are not familiar with the platform are able to jump into conversations and start sharing code and links within just minutes. Non developers are also able to understand the layout such as the Project Managers that are keeping the projects on track. We have not seen any tickets where employees are having trouble understanding Slack.
    Incentivized
    Read full review
    Reliability and Availability
    Rakuten
    No answers on this topic
    Salesforce
    Yes, the app works 24/7. I don't even recall having any period that we could not use since the implementation. Even the maintenance periods are barely noticeable and our work is not impacted by it when it happens.
    Incentivized
    Read full review
    Performance
    Rakuten
    No answers on this topic
    Salesforce
    Slack is a soft app, we don't have many issues with it. I recall one or two people complaining about something during our usage period, but I didn't have a bad experience. When the app is slow, usually the problem is with my computer or my internet. The app works just fine.
    Incentivized
    Read full review
    Support Rating
    Rakuten
    I have not frequently used the support for Viber as I have not had many problems with it on my phone. I did use support one time for problems with the computer application and used the forums to solve my problems. They were fairly easy to follow and I appreciated the online help in that format.
    Incentivized
    Read full review
    Salesforce
    Whenever I've had to troubleshoot an issue with Slack (which, to be honest, has not happened very often), their online documentation has been easy to locate, easy to understand, and effective in resolving my issue. Slack's ever-growing popularity also means that there's a large community of practice out there that can be depended upon.
    Incentivized
    Read full review
    Implementation Rating
    Rakuten
    No answers on this topic
    Salesforce
    I was not part of the implementation team, but I recall being 100% happy and excited to learn and use a new tool. I'm still am to be honest.
    Incentivized
    Read full review
    Alternatives Considered
    Rakuten
    End-to-end encryption scrambles my messages and delivers them as a scrambled code to my friend's device, whether mobile or desktop, so that only their device can decode them into plain text. If my friend's phone is turned off or they don't have access to the internet, my message will be stored on Viber's servers (for a limited time) until their device is ready to receive it.

    Because Viber can't access or read my private conversations in the first place, Viber can't sell them.
    Incentivized
    Read full review
    Salesforce
    I like Slack better than ClickUp, because I would spend 30-60 minutes a day updating my ClickUp tasks. The way ClickUp was used was very micromanaging. I billed by the hour, so I was willing to put in the time to alert the boss what tasks I was working on.
    One of my jobs used Hive - I mostly just ran it in the background in case anyone messaged me. I did not use it often.
    Incentivized
    Read full review
    Return on Investment
    Rakuten
    • Viber saves me financially since I am now able to communicate with my international clients for free.
    • Viber helps keep my clients engaged by the fact that I can so easily share photos, which is important as a freelance photographer.
    • Viber allows me to make my messages to clients appealing in a visual way, which I have noticed helps drive actions of my clients, such as remembering to book their next session or pay for their photo order.
    Incentivized
    Read full review
    Salesforce
    • Slack has been incredibly helpful in connecting various tech apps and ecosystems, creating a more streamlined and responsive process.
    • Slack has made it significantly easier to communicate with our team members across multiple time zones, creating a more engaging environment for our all-remote team.
    Incentivized
    Read full review
    ScreenShots