Top 15 open-source products relevant to Communication, Chat, and Messaging

Fast, simple & secure messaging. Privacy that fits in your pocket.

Open Source

Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.

Open Source free

Matrix is an open standard for decentralized persistent communication over IP.

Open Source

Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.

Open Source

Private & Secure Messenger.

Open Source

Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.

Open Source

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

Open Source

Mumble is an open source, low-latency, high quality voice chat software primarily intended for use...

Open Source

Linphone is an internet phone or Voice Over IP phone (VoIP).

Open Source

Dino is a modern open-source chat client for the desktop.

Open Source

Free and open-source SIP/VoIP Client.

Open Source

Screensharing, online meetings & web conferencing without data leaks.

Open Source

spreed is the worldwide Unified Web Conferencing service offering integrated web- and telephone conferencing.

Open Source

CoyIM is a safe and secure chat client.

Open Source

Psi+ is a development branch of the Psi XMPP client.

Open Source