Open Source Mattermost AlternativesTop Group Chat Apps & Team Collaboration Tools like Mattermost
The best open source alternative to Mattermost is Element. If that doesn't suit you, our users have ranked more than 100 alternatives to Mattermost and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Mattermost are Matrix.org, Zulip, Revolt and Rocket.Chat.
Mattermost alternatives are mainly Group Chat Apps but may also be Instant Messengers or Encrypted Chat Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Mattermost.- 276 Element alternatives
- Group Chat App
- Instant Messenger
- Encrypted Chat App
- Freemium • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Matrix.org
- Flathub
- F-Droid
- Cloudron
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.
- - Element is the most popular Web-based, Windows, Android & Mac alternative to Mattermost.
- - Element is the most popular Open Source & free alternative to Mattermost.
Element Features
- End-to-End Encryption
- Decentralized
- Privacy focused
- VoiP Calls
- Real time collaboration
- Dark Mode
- Cloud Sync
- No Tracking
- Support for MarkDown
- File Versioning
- DRM Free
- Ad-free
Comments about Element as a Alternative to Mattermost
nrg200Federated, bridged with many IRC networks.
3 - 141 Matrix.org alternatives
- Group Chat App
- Instant Messenger
- Encrypted Chat App
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- WebRTC
- Python
- JavaScript
- Go (Programming Language)
- Cloudron
- Java
- Perl
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.
Matrix.org Features
- Decentralized
- End-to-End Encryption
- Privacy focused
- Ad-free
- VoiP Calls
- No Tracking
- Multiple Account support
- Real time collaboration
Opinions about Matrix.org as a Alternative to Mattermost
- 224 Zulip alternatives
- Group Chat App
- Instant Messenger
- Encrypted Chat App
- Free Personal • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- BSD
- iPad
- Self-Hosted
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.
Zulip Features
Comments about Zulip as a Alternative to Mattermost
hritcuZulip does threaded conversations right, requiring every message to be in a thread and threads to be named. Like Mattermost, Zulip is also open source and can be self-hosted, but they also provide hosting, and for open source projects and research groups this hosting is free.
1vedarshshahZulip's topics feature is great.
5KazimirPodolskiZulip is plagued with bugs, incompletenesses and annoyances, creating a ton of friction in everyday work. It doesn't matter how open you are when it's so much harder to work with than competitors.
0strifelAlso opensource and has the topics feature
0SethuZulip has more potential than Mattermost. Zulip is also an open source alternative to Slack but approached in a different manner.
6 - 29 Revolt alternatives
- Group Chat App
- Instant Messenger
- Video Calling App
- Free • Open Source
- Windows
- Linux
- Online
- Android
- Rust
- Flathub
Revolt is a brand new chat platform designed around you.
Revolt Features
- Privacy focused
- Ad-free
- No Tracking
- VoiP Calls
- Support for Themes
- Cloud Sync
- Screen Sharing
- Extensible by Plugins/Extensions
- Support for @mentions
- Support for MarkDown
- Two-factor Authentication
- 130 Rocket.Chat alternatives
- Group Chat App
- Instant Messenger
- Encrypted Chat App
- Freemium • Open Source
- Mac
- Windows
- Linux
- Android
- iPhone
- iPad
- Self-Hosted
- Cloudron
Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Rocket.Chat Features
- Ad-free
- End-to-End Encryption
- Extensible by Plugins/Extensions
- Screen Sharing
Comments about Rocket.Chat as a Alternative to Mattermost
ruvenssrgwIs a team collaboration at its core, and also has the alternative of enterprise support.
0 - 62 Element X alternatives
- Group Chat App
- Video Calling App
- Free • Open Source
- Android
- iPhone
- Android Tablet
- iPad
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.
Element X Features
- VoiP Calls
- Privacy focused
- End-to-End Encryption
- Ad-free
- Dark Mode
- 44 Mirotalk alternatives
- Group Chat App
- Instant Messenger
- Encrypted Chat App
- Free • Open Source
- Online
- Self-Hosted
Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.
Mirotalk Features
- Screen Sharing
- VoiP Calls
- Privacy focused
- Desktop Sharing
- Dark Mode
- End-to-End Encryption
- Real time collaboration
- Multiple Account support
- 10 TryQuiet alternatives
- Group Chat App
- Encrypted Chat App
- Free • Open Source
- Windows
- Mac
- Linux
- Android
Quiet is an alternative to team chat apps like Slack, Discord, and Element that does not require trusting a central server or running one's own. In Quiet, all data syncs directly between a team's devices over Tor with no server required.
TryQuiet Features
- Privacy focused
- No registration required
- Decentralized
- Support for @mentions
- End-to-End Encryption
- 45 Gitter alternatives
- Social Network
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
Gitter is a chat and collaboration tool for developers and users. It's a place for developers to talk.
Gitter Features
- Real time collaboration
- 123 Twake alternatives
- Team Collaboration Tool
- Task Management Tool
- Spreadsheet App
- Freemium • Open Source
- Mac
- Windows
- Linux
- Self-Hosted
Twake is a real-time teamwork platform. It is a suite of collaborative tools that includes the specificities of some bestsellers (Slack, Trello, Google Drive...). We provide professional messaging, storage space, online collaborative editors (Words, Excel, PowerPoint), task...
Twake Features
- Real time collaboration