97 Like Riot.im Good alternative? YES NO Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both public and private and provides messaging... Free Open Source Linux Web Android iPhone iPad Self-Hosted Chrome Safari ... F-Droid Firefox Decentralized End-to-end encryption Matrix.org protocol Built-in File transfer Encrypted chat GitHub integration ... Group chat Group collaboration Server Moderation Server side history Slack integration Team collaboration Video calling Voice Call Add a feature
47 Like Matrix.org Good alternative? YES NO Matrix is an open standard for decentralized persistent communication over IP. It can be used for decentralised group chat, WebRTC signaling, IoT-data transfer, ... Free Open Source Mac Windows Linux Web Android iPhone Android Tablet iPad ... Self-Hosted WebRTC Python JavaScript Go (Programming Language) Java Perl Chat Bot Decentralized Encrypted chat End-to-end encryption Group chat Real time collaboration ... Server side history Team collaboration WebRTC Add a feature
24 Like Kontalk Good alternative? YES NO Kontalk is an open source replacement for WhatsApp. Server and client software are open and hosting your own server is possible but not required. All communication is... Free Open Source Android Self-Hosted No features added Add a feature
23 Like Zulip Good alternative? YES NO Zulip is a group chat app. Its most distinctive characteristic is that messages are threaded by topic, helping you have long-running, organized conversations.... Free Open Source Mac Windows Linux Web Android iPhone BSD Self-Hosted GitHub integration Group chat Group collaboration Integrated File Sharing Team collaboration Add a feature
7 Like Cyanide Good alternative? YES NO Cyanide is Tox client for Sailfish OS . Features 1v1 messaging DNS discovery ... Free Open Source Self-Hosted Sailfish OS No features added Add a feature
7 Like Webogram Good alternative? YES NO Webogram is an unofficial Telegram web app. Telegram offers great apps for mobile communication. It is based on the MTProto protocol and has an Open API and... Free Personal Mac Windows Linux Chrome OS Self-Hosted No features added Add a feature
1 Like Tinode Good alternative? YES NO Open source instant messaging server and clients. Backend in pure Go (license GPL 3.0), client-side binding in Java for Android and Javascript (license Apache 2.0)... Free Open Source Web Android Self-Hosted No features added Add a feature
1 Like VideoMeeting Good alternative? YES NO VideoMeeting is a free and open source video conference solution built to have video calls and chats using your web browser. It is a pure web application based on WebRTC... Free Open Source Web Chrome OS Self-Hosted Video calling Add a feature
1 Like PWRTelegram bot API Good alternative? YES NO Boosted version of the telegram bot API. It has all of the official telegram bot API features plus: - Downloading of files up to 1.5 GB in size - Anonymous file... Free Open Source Web Telegram Self-Hosted Telegram Add a feature
1 Like d-note Good alternative? YES NO d-note is a self destructing notes web application that you can run on your own server. A message is created using the web form, and when submitted, a link is returned... Free Open Source Self-Hosted Flask Self destructing messages Add a feature Discontinued App no longer accessible: https://github.com/atoponce/d-note
