Microsoft Teams AlternativesOnly Open Source apps categorised as Instant Messengers

If that doesn't work for you, our users have ranked more than 100 alternatives to Microsoft Teams, but unfortunately only zero of them are open source Instant Messengers. If you can't find an alternative you can try to remove all filters.

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Microsoft Teams alternatives are mainly Group Chat Apps but may also be Instant Messengers or Video Calling Apps.  Other popular filters includes Self-Hosted + Open Source. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Microsoft Teams.
Microsoft Teams iconMicrosoft Teams
  55
  • ...

Integrates seamlessly with Office 365 to centralize chat, files, and tools. Supports HD audio and video meetings, available across multiple platforms.

More about Microsoft Teams
More about Microsoft Teams
Microsoft Teams alternatives page was last updated Dec 11, 2024
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  1. Element icon
    Element icon

    Element

     698 likes
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    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.

    295 Element alternatives
    Video calls for desktop and mobile

    License model

    • Freemium • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Matrix.org
    • Flathub
    • F-Droid
    • Cloudron
    Collaboration widgets
    Collaboration and screen sharing
    +1
    Connect with other apps

    Properties

    1.  Privacy focused

    Features

    1.  End-to-End Encryption
    2.  Decentralized
    3.  Federated
    4.  Team Collaboration
    5.  Encrypted Chat
    6.  Video Calling
    7.  Matrix Protocol
    8.  Voice Chat
    9.  Direct Messaging
    10.  Federation
    11.  Cloud Hosting
    12.  Simple installation
    Element iconMicrosoft Teams Icon

    Element VS Microsoft Teams

    Is Element a good alternative to Microsoft Teams?
     
    Comments about Element as an Alternative to Microsoft Teams
     
       
    chtfn

    Element has come a long way, and is now a fully-featured group chat application, with spaces (to group several rooms), numerous bridges so people are not locked in one single tool, and great integrations.

    Positive comment •Nov 6, 2021
    1
    tutosfaciles48

    Riot.im have a lot of mods/plugins which allow us to have video calls, ldap/AD integration, ...

    Positive comment •Jun 19, 2020
    4
    Guest

    Clean and simple interface. Bridges is an extremely nice feature.

    Positive comment •Jan 31, 2020
    1
    Show more comments
    3 of 4 comments
    Microsoft Teams Icon
    Element icon

    • Most users think Element is a great Microsoft Teams alternative.

    • Element is the most popular Web-based, Windows, Android & Mac alternative to Microsoft Teams.

    • Element is the most popular Open Source & free alternative to Microsoft Teams.

    • Element is Freemium and Open SourceMicrosoft Teams is Freemium and Proprietary
    • Element is Decentralized and Privacy focusedMicrosoft Teams is not according to our users
  2. Jitsi Meet icon
    Jitsi Meet icon

    Jitsi Meet

     254 likes
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    Go ahead, video chat with the whole team. In fact, invite everyone you know. Jitsi Meet is a fully encrypted, 100% open source video conferencing solution that you can use all day, every day, for free.

    143 Jitsi Meet alternatives
    Jitsi Meet screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Apple Watch
    • F-Droid
    Jitsi Meet screenshot 1
    Jitsi Meet screenshot 2

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Browser-based
    2.  Video Conferencing
    3.  End-to-End Encryption
    4.  Video Calling
    5.  Screen Sharing
    6.  Ad-free
    7.  Encrypted Chat
    8.  Remote Work
    9.  No Tracking
    10.  Stream audio
    11.  Unlimited users
    12.  WebRTC
    Jitsi Meet iconMicrosoft Teams Icon

    Jitsi Meet VS Microsoft Teams

    Is Jitsi Meet a good alternative to Microsoft Teams?
     
    Comments about Jitsi Meet as an Alternative to Microsoft Teams
     
    Nicolas

    No account required, end-to-end encryption, open source... All good reasons to be happy with Jitsi

    Positive comment •Jul 31, 2024
    0
    Guest

    good software alternative to Meet

    Positive comment •Aug 25, 2020
    1
    Microsoft Teams Icon
    Jitsi Meet icon

    • Most users think Jitsi Meet is a great Microsoft Teams alternative.

    • Jitsi Meet is Free and Open SourceMicrosoft Teams is Freemium and Proprietary
    • Jitsi Meet is Privacy focused and LightweightMicrosoft Teams is not according to our users
  4. Jami icon
    Jami icon

    Jami

     224 likes
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    Jami (formerly GNU Ring, SFLphone) positions itself as a potential free Skype replacement

    163 Jami alternatives
    Jami video conference OS X

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Jami conference call Linux
    Jami screensharing Linux
    +9
    Jami instant message on mobile device

    Properties

    1.  Privacy focused

    Features

    1.  Decentralized
    2.  Ad-free
    3.  Video Conferencing
    4.  Peer-To-Peer
    5.  Video Calling
    6.  Multi Platform
    7.  Encrypted Chat
    8.  SIP client
    9.  End-to-End Encryption
    10.  Screen Sharing
    11.  Dark Mode
    12.  Multiple Account support
    Jami iconMicrosoft Teams Icon

    Jami VS Microsoft Teams

    Is Jami a good alternative to Microsoft Teams?
     
    Comments about Jami as an Alternative to Microsoft Teams
     
    Guest

    Works as long as there is a connection between the parties as peer-to-peer.

    Positive comment •Dec 11, 2024
    0
    Microsoft Teams Icon
    Jami icon
    • Jami is Free and Open SourceMicrosoft Teams is Freemium and Proprietary
    • Jami is Decentralized and Privacy focusedMicrosoft Teams is not according to our users
  5. Wire icon
    Wire icon

    Wire

     306 likes
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    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.

    282 Wire alternatives
    Wire screenshot 1
    Wire screenshot 2
    +2
    Wire screenshot 3

    License model

    • Free Personal • Open Source

    Application types

    Platforms

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

    Properties

    1.  Security-focused
    2.  Privacy focused

    Features

    1.  End-to-End Encryption
    2.  Video Calling
    3.  Encrypted Chat
    4.  VoiP Calls
    5.  Encrypted calls
    6.  Screen Sharing
    7.  Multiple Account support
    8.  WebRTC
    9.  Secure File Sharing
    10.  Voice Chat
    11.  Voice messages
    Wire iconMicrosoft Teams Icon

    Wire VS Microsoft Teams

    Is Wire a good alternative to Microsoft Teams?
     
  6. Mattermost icon
    Mattermost icon

    Mattermost

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

    122 Mattermost alternatives
    Mattermost screenshot 1

    License model

    • Freemium • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • JavaScript
    • Go (Programming Language)
    • Cloudron
    Mattermost screenshot 1
    Mattermost screenshot 2
    +1
    Mattermost screenshot 3

    Properties

    1.  Lightweight

    Features

    1.  Team Collaboration
    2.  Extensible by Plugins/Extensions
    3.  On-premises software
    4.  Chat Bot
    5.  Built-in viewer
    6.  Dark Mode
    7.  Full-Text Search
    8.  Real time collaboration
    9.  Support for @mentions
    10.  Support for MarkDown
    11.  End-to-End Encryption
    12.  No Tracking
    Mattermost iconMicrosoft Teams Icon

    Mattermost VS Microsoft Teams

    Is Mattermost a good alternative to Microsoft Teams?
     
    Comments about Mattermost as an Alternative to Microsoft Teams
     
    Guest

    Easy to install, free of charge and self hosted.

    Positive comment •Sep 7, 2020
    1
    Guest

    Mostly the same features, but self-hosted. Although less integrations in my knowledge

    Positive comment •May 29, 2020
    1
    Microsoft Teams Icon
    Mattermost icon

    • Most users think Mattermost is a great Microsoft Teams alternative.

    • Mattermost is Freemium and Open SourceMicrosoft Teams is Freemium and Proprietary
    • Mattermost is LightweightMicrosoft Teams is not according to our users
  7. Zulip icon
    Zulip icon

    Zulip

     202 likes
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    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.

    235 Zulip alternatives
    Zulip screenshot 1

    License model

    • Free Personal • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • BSD
    • iPad
    • Self-Hosted
    Zulip screenshot 1
    Zulip screenshot 2
    +4
    Zulip screenshot 3

    Top Zulip Features

    1.  Threaded Conversations
    2.  Team Collaboration
    3.  Support for Hotkeys
    4.  Community-based
    5.  Support for MarkDown
    6.  Syntax Highlighting
    7.  Chat Bot
    8.  Integrated File Sharing
    9.  Secure Chat
    10.  Third party integrations
    11. GitHub icon  GitHub Integration
    12.  Live topics
    Zulip iconMicrosoft Teams Icon

    Zulip VS Microsoft Teams

    Is Zulip a good alternative to Microsoft Teams?
     
    Comments about Zulip as an Alternative to Microsoft Teams
     
    Guest

    The threading feature makes conversations organized, it bring the best of chat and email together

    Positive comment •May 29, 2020
    1
    Microsoft Teams Icon
    Zulip icon
    • Zulip is Free Personal and Open SourceMicrosoft Teams is Freemium and Proprietary
  9. Element X icon
    Element X icon

    Element X

     22 likes
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    It is the brand new, and fastest ever, Matrix client. It is for personal and community use, and will support enterprise functionality later this year.

    85 Element X alternatives
    Element X screenshot 1
    Element X screenshot 2
    +1
    Element X screenshot 3

    License model

    • Free • Open Source

    Application types

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  VoiP Calls
    2.  Ad-free
    3.  Matrix Protocol
    4.  End-to-End Encryption
    5.  Dark Mode
    6.  Decentralized
    7.  No Tracking
    8.  Voice Chat
    Element X iconMicrosoft Teams Icon

    Element X VS Microsoft Teams

    Is Element X a good alternative to Microsoft Teams?
     
  10. Rocket.Chat icon
    Rocket.Chat icon

    Rocket.Chat

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

    137 Rocket.Chat alternatives
    Rocket.Chat screenshot 1

    License model

    • Freemium • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    • Cloudron
    Rocket.Chat screenshot 1
    Rocket.Chat screenshot 2
    +5
    Rocket.Chat screenshot 3

    Top Rocket.Chat Features

    1.  Omnichannel messaging
    2.  Ad-free
    3.  Channels
    4.  Self-Serve Capability
    5. Telegram icon  Telegram integration
    6. WhatsApp icon  Whatsapp integration
    7.  End-to-End Encryption
    8.  Extensible by Plugins/Extensions
    9.  Screen Sharing
    10.  Bots
    11.  Integrated File Sharing
    12.  Video Conferencing
    Rocket.Chat iconMicrosoft Teams Icon

    Rocket.Chat VS Microsoft Teams

    Is Rocket.Chat a good alternative to Microsoft Teams?
     
    Comments about Rocket.Chat as an Alternative to Microsoft Teams
     
    Guest

    Open source, very powerful. Can be hosted independently on own hardware but also as-a-service. Does the exact same without limiting the user to one service provider or client.

    Positive comment •Mar 20, 2020
    0
    Microsoft Teams Icon
    Rocket.Chat icon
    • Rocket.Chat is Freemium and Open SourceMicrosoft Teams is Freemium and Proprietary
  11. Nextcloud Talk icon
    Nextcloud Talk icon

    Nextcloud Talk

     33 likes
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    Nextcloud Talk is a fully self-hosted audio/video and chat communication service. It features web and mobile apps and is designed to offer the highest degree of security while being easy to use.

    101 Nextcloud Talk alternatives
    Nextcloud Talk screenshot 1

    License model

    • Free Personal • Open Source

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    • Nextcloud
    Nextcloud Talk screenshot 1
    Nextcloud Talk screenshot 2
    +5
    Nextcloud Talk screenshot 3

    Properties

    1.  Privacy focused

    Features

    1.  Screen Sharing
    2.  End-to-End Encryption
    3.  Ad-free
    4.  Real time collaboration
    5.  No registration required
    6.  No Tracking
    Nextcloud Talk iconMicrosoft Teams Icon

    Nextcloud Talk VS Microsoft Teams

    Is Nextcloud Talk a good alternative to Microsoft Teams?
     
  12. Mirotalk icon
    Mirotalk icon

    Mirotalk

     14 likes
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    Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.

    56 Mirotalk alternatives
    Mirotalk screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Online
    • Self-Hosted

    Properties

    1.  Privacy focused

    Features

    1.  Screen Sharing
    2.  Desktop Sharing
    3.  Dark Mode
    4.  End-to-End Encryption
    5.  Real time collaboration
    6.  VoiP Calls
    7.  No Tracking
    8.  Multiple Account support
    9.  Ad-free
    10.  No registration required
    11.  Voice Chat
    Mirotalk iconMicrosoft Teams Icon

    Mirotalk VS Microsoft Teams

    Is Mirotalk a good alternative to Microsoft Teams?
     
10 of 16 Microsoft Teams alternatives