Cost / License
- Free
- Open Source (Apache-2.0)
Application types
Platforms
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- F-Droid


Matrix is described as 'Open protocol for decentralized, end-to-end encrypted communication supporting instant messaging, VoIP, IoT, data persistence, and silos bridging over federated servers' and is a very popular instant messenger in the social & communications category. There are more than 100 alternatives to Matrix for a variety of platforms, including Android, Web-based, Linux, Windows and Mac apps. The best Matrix alternative is Signal, which is both free and Open Source. Other great apps like Matrix are Element, Telegram, Discord and Pidgin.


Rivers is a free communication and collaboration app that lets you have more organized and focused conversations. Whether you are a part of a company or friend group i.e. community, you will organize your conversations around topics. Create your cube.




Graph Messenger is an UNOFFICIAL messaging app that uses Telegram's API and add new features like real multi account system, download manager and time line.




Team chat, videoconferencing, screen sharing, file sharing, apps builder, process automation, integrations - with Tekos Collaboration & Automation




JANDI is a group-oriented enterprise messaging platform with an integrated suite of collaboration tools for workplace.




White Noise aims to be the most secure private chat app on Nostr, with a focus on privacy and security. Under the hood, it uses the Messaging Layer Security (MLS) protocol to manage group communications in a highly secure way.




Fast open source Slack desktop app, written in Node.js with native UI powered by the Yue library.



Add contextual activity feeds, chat, and secure file sharing directly into your apps to increase user engagement, improve in-app retention, and reduce customer churn.




Fuse Chat is a Video Chat script userfriendly php socket.io script With is fully responsive design whatever if you are using a mobile a computer or even a tablet will always fit your screen and give you the best chat experience possible.

palava.tv is a cost-free, simple to use, secure, and open source platform for video calls. It is developed and operated by a charitable non-profit organization based in the EU. palava.tv runs directly in the web browser and its usage does not require a registration.
