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Slack Alternatives

Slack is described as 'unified communication platform built with an optimized workflow to keep modern teams focused and productive. A familiar chat interface facilitates discussions while advanced features are easily exposed based on context' and is a leading Group Chat app in the social & communications category. There are more than 100 alternatives to Slack for a variety of platforms, including Windows, Android, Mac, iPhone and Linux. The best alternative is Mattermost, which is both free and Open Source. Other great apps like Slack are Element, Discord, Zulip and Rocket.Chat.

Slack alternatives are mainly Group Chat Apps but may also be Encrypted Chat Apps or Instant Messengers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Slack.
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Slack iconSlack
  826
  • Mac
  • Windows
  • Linux
  • Android
  • iPhone
  • Chrome OS
  • Android Tablet
  • iPad
  • Electron / Atom Shell
  • Software as a Service (SaaS)

Slack is a unified communication platform built with an optimized workflow to keep modern teams focused and productive. A...

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  1. Mattermost icon

    Mattermost

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • JavaScript
    • Go (Programming Language)
    • Cloudron
    116 alternatives to Mattermost 

    Mattermost is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.

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    Mattermost vs Slack opinions
    Almost everyone thinks Mattermost is a great alternative to Slack.
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    Guest

    Its the same but you keep your server where you want so no one is playing with your data, and you can have an unlimited history depending on what you need for free so really way better !

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    Guest

    Mattermost is quite versatile and has been used within several of my past employers.

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    5
    liger1978

    Great interface, you control your data.

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    Guest

    It's faster for one thing. It's far superior in terms of data ownership, and it's extremely scalable.

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    1
    svelle

    Has more flexibility due to its extensive plugin system compared to other alternatives.

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    1
    Mudie

    Looks and works very much the same as Slack and complete control over your data housed separately from anyone else.

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    1
    jaydeland

    Open source with control over your data.

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  2. Element icon

    Element

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Matrix.org
    • Cloudron
    • F-Droid
    • FLATHUB
    262 alternatives to Element 

    Element is a secure collaboration and messaging app based on the Matrix protocol. It’s decentralised to deliver digital sovereignty, and based on an open standard for easy connections and interoperability. It is end-to-end encrypted by default.

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    Features
    1.  DecentralizedElement is based on a decentralized infrastructure with no single entity controlling it.
    2.  End-to-End EncryptionElement has E2E Encryption, for entire or parts of the app.
    3.  Privacy focusedElement is considered a privacy friendly alternative.
    4.  VoiP CallsElement allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
    5.  Support for MarkDownElement supports MarkDown for document formatting.
    6.  File VersioningElement has a version system that lets you view and go back to older versions of the project/file/document.
    7.  No TrackingElement will not track you or use your personal data.
    8.  Real time collaborationMultiple users can work together in Element simultaneously.
    9.  DRM FreeNo Digital rights management (DRM), i.e. no copy protection.
    Video calls for desktop and mobile
    Collaboration widgets
    Collaboration and screen sharing
    Element vs Slack opinions
    Almost everyone thinks Element is a great alternative to Slack.
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    dserverhosting58

    this is a open source and free software that is very useful for me

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    xplosionmind

    It is decentralized and it works with an open standard

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    2
    kaspian

    Encrypted, free, open-source, decentralized

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    Guest

    Privacy by design and based on matrix protocol!

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    2
    Guest

    Federated, decentralized, encrypted, open-source.

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    5
    User6044478

    Open Source / Free Software,

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    1
    brinerustle

    because its open source, decentralised, and end-to-end secure. Plus the folks at matrix.org are working to get us out of our communication silos by creating standards for communication interoperability!

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  3. Discord icon

    Discord

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • BSD
    • iPad
    • Epic Games Store
    • Electron / Atom Shell
    • FreeBSD
    • Playstation
    • Xbox
    150 alternatives to Discord 

    Whether you’re part of a school club, a gaming group, a worldwide art community, or just a handful of friends that want to spend time together, Discord makes it easy to talk every day and hang out more often.

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    Features
    1.  VoiP CallsDiscord allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
    2.  Ad-freeDiscord doesn't contain any form of external advertising.
    3.  Screen SharingYou can use Discord to share your screen with your colleages or friends.
    4.  Text to SpeechDiscord allows you to transform written text into spoken text.
    5.  LightweightDiscord consumes less device resources compared to similar apps.
    6.  Two-factor AuthenticationDiscord supports two-factor authentication (2FA).
    7.  Dark ModeDiscord supports dark mode for comfortable usage in low light conditions.
    Discord Desktop Client Dark Mode
    Discord Desktop Client Light Mode
    Discord Desktop Client Screenshare
    Discord vs Slack opinions
    Most users think Discord is a great alternative to Slack.
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    TheBeast

    Good app for your personal use. Wouldn't recommend for an Enterprise setting which is what Slack is more geared towards.

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    14
    zetneteork

    Discord is a good choice for communities with various interests. There are nice options on how to sort topics into individual channels. I do not see Discord as a competitor of Slack in the business sector.

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    alexandrezanni

    Discord is more gamer oriented than business oriented.

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    1
    leyline

    Discord is much simpler to use in terms of connecting new servers/workspaces to your account, but slack has conversation threads which sometimes come in handy if a conversation is between 2 people but wants to stay in the main channel so others can reference it. 95% i would choose discord though.

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    Dillxn

    Discord is now rebranding to be more enterprise-friendly. It can be customised to fit your every need.

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    jbrown

    Very very similar in terms of use and features. Of course, discord is marketed as for gamers while slack is for teams but usage is almost identical.

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    thompsonmj

    Slack is a project productivity and communication enhancement tool with integrating with other collaborative tools like GitHub, document editors, storage, etc. Discord is for recreational chatting.

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  4. Zulip icon

    Zulip

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • BSD
    • iPad
    • Self-Hosted
    219 alternatives to Zulip 

    Zulip is the only modern team chat app that is designed for both live and asynchronous conversations. Zulip topics create a separate space for each discussion, so different conversations will never get in each other's way.

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    Zulip vs Slack opinions
    Almost everyone thinks Zulip is a great alternative to Slack.
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    Guest

    the threading model is the best i've used for keeping up with active communities, and the open-source community is excellent.

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    Guest

    It's a little different, for sure, but what it does, it does better than slack. Not a open source copy of slack like mattermost. If you want slack and nothing else, but in open source, stick to mattermost, if you want something that exceeds that, choose zulip.

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    paulocoghi

    More than feature parity with Slack, it's better because of Streams and Topics. It offer the same free tier with 10.000 max messages and better paid plans to the hosted version, and also provide the open source self-hosted option to install it on your own server and also remove the max messages limits. 5 stars

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    Guest

    The concept of topics to each message is a super useful feature :)

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    Guest

    Zulip is open source and the methods of communications used is vastly different. It is specially useful in professional environments where different teams might want to participate in different conversations at the same time. Zulip solves this problem by including topics, where in each channel/stream, multiple topics can exist at once, at the same time.

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    4
    superbiche

    Open Source without limitations when on premises. Much better information categorisation with Streams & Topics. Vibrant community.

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    shantnukumar

    One can easily switch in between conversation between different threads! Extremely helpful for any organisation.

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  5. Rocket.Chat icon

    Rocket.Chat

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    • Cloudron
    128 alternatives to Rocket.Chat 

    Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

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    Features
    1.  Ad-freeRocket.Chat doesn't contain any form of external advertising.
    2.  Extensible by Plugins/ExtensionsRocket.Chat can be extended with add-ons, plugins and extensions.
    3.  Screen SharingYou can use Rocket.Chat to share your screen with your colleages or friends.
    Screenshot
    Screenshot
    Screenshot
    Rocket.Chat vs Slack opinions
    Almost everyone thinks Rocket.Chat is a great alternative to Slack.
    Guest

    Rocket.Chat comes very close to slack regarding it's core features and handling.

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    JohnFastman

    Does everything Slack does AND it's open source. However, it's also self-hosted. This means you have to put in the effort to set it up, but you control your own data, which is a huge advantage to your privacy - your chats and files don't sit on someone else's servers, ready for them or hackers to look at.

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    Guest

    open source, locally hosted so you own your data.

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  6. Matrix.org icon

    Matrix.org

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • WebRTC
    • Python
    • JavaScript
    • Go (Programming Language)
    • Cloudron
    • Java
    • Perl
    130 alternatives to Matrix.org 

    Matrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of servers with no single point of control.

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    Features
    1.  DecentralizedMatrix.org is based on a decentralized infrastructure with no single entity controlling it.
    2.  End-to-End EncryptionMatrix.org has E2E Encryption, for entire or parts of the app.
    3.  VoiP CallsMatrix.org allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
    4.  Multiple Account supportMatrix.org support multiple accounts without the need to logout and login
    5.  Real time collaborationMultiple users can work together in Matrix.org simultaneously.
    Main Page
    Matrix.org vs Slack opinions
    Most users think Matrix.org is a great alternative to Slack.
    Guest

    It can be easily bridged to many other chat systems, including Slack, which makes transitioning much easier. It's also open source and decentralized (self-hostable + communication with other servers).

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    Guest

    Respects your Freedom. Increasingly popular

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    somegirlfromit

    Matrix is a protocol, not a client.

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    17
    User6044478

    Open source, fecentralized, federation, chat-voice-video function.

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    Guest

    Free open source instant messaging service with federation.

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    Guest

    free, end-to-end encryption

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    nrg200

    Capable of everything Slack can do, but can be self-hosted - keeping a team's data in-house.

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  7. Wire icon

    Wire

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • F-Droid
    • Software as a Service (SaaS)
    256 alternatives to Wire 

    Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most secure end-to-end-encryption.

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    Features
    1.  End-to-End EncryptionWire has E2E Encryption, for entire or parts of the app.
    2.  VoiP CallsWire allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
    3.  Screen SharingYou can use Wire to share your screen with your colleages or friends.
    4.  Privacy focusedWire is considered a privacy friendly alternative.
    5.  Multiple Account supportWire support multiple accounts without the need to logout and login
    Screenshot
    Screenshot
    Wire vs Slack opinions
    Most users think Wire is a great alternative to Slack.
  8. AirSend icon

    AirSend

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Software as a Service (SaaS)
    23 alternatives to AirSend 

    AirSend is a simple collaboration space for professionals and small teams that brings all your conversations, files, notes, and to-do lists into one place so that you can get work done faster and easier.

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    Features
    1.  VoiP CallsAirSend allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
    2.  Ad-freeAirSend doesn't contain any form of external advertising.
    3.  Support for @mentionsAirSend supports the use of mentions through @ to a particular user, who will be notified personally.
    Screenshot
    Screenshot
    Screenshot
    AirSend vs Slack opinions
    Almost everyone thinks AirSend is a great alternative to Slack.
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    thiagoao

    I think the combination of communication and task/file management makes Airsend an excellent tool. They are always including new features. Best of all it is Free.

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    Marco_Rater

    The best feature here is the ability to add outside organisations. So you can get one airsend org to talk to another org. Which is really awesome

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    hazzelle721

    Collaboration is made easy

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    JackN

    it's a great software, free (for now)

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    olgafedorova

    Free. Has all the messaging features. One on one messaging is a bit convoluted but overall it's great

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    JenniferES

    The software is fantastic, and it's free

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    theotakuboxmarketing

    It's free. And had all the same features without the annoyance

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  9. Basecamp icon

    Basecamp

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    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)
    514 alternatives to Basecamp 

    Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and centralize feedback.

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    Features
    1.  Support for @mentionsBasecamp supports the use of mentions through @ to a particular user, who will be notified personally.
    2.  Real time collaborationMultiple users can work together in Basecamp simultaneously.
    3.  Sync with Google CalendarBasecamp can be synchronized with Google Calendar
    4.  Task Time TrackingKeep a record of time spent on a task with Basecamp.
    5.  Gantt-chartsBasecamp allows you to visualize your project plan through a timeline with schedule bars and keep track of the work done.
    Basecamp home screen
    Discussion thread
    To-do lists
    Basecamp vs Slack opinions
    Some users think Basecamp is a great alternative to Slack, some don't.
    Guest

    Slack is a communication/chat tool. Basecamp is project management.

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    Zeklandia

    It is completely free for education users, and allows deeper integration with files and documents, allowing chat to be just that: chat. It also allows for several levels of organization and just about everything is customizable.

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    -1
  10. Revolt  icon

    Revolt

    • Online
    • Windows
    • Linux
    • Android
    19 alternatives to Revolt  

    Revolt is a brand new chat platform designed around you.

     Suggest and vote on features
    Features
    1.  Privacy focusedRevolt is considered a privacy friendly alternative.
    2.  Ad-freeRevolt doesn't contain any form of external advertising.
    3.  VoiP CallsRevolt allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
    4.  No TrackingRevolt will not track you or use your personal data.
    5.  End-to-End EncryptionRevolt has E2E Encryption, for entire or parts of the app.
    6.  Screen SharingYou can use Revolt to share your screen with your colleages or friends.
    Server view
    Server Tab in "Discover" Menu
Showing 10 of 206 alternatives
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