Browse free open source Chat software and projects for Linux below. Use the toggles on the left to filter open source Chat software by OS, license, language, programming language, and project status.
You can message and share files inside your intranet without a server.
A universal instant messaging (IM) program
An intranet chat application that does not require a server.
Development toolkit for Web Services and XML data bindings for C & C++
Psi+ Project — development branch of Psi XMPP client
Psi IM — Qt-based XMPP client
Low-latency, high quality voice chat for gamers
The Leading Open Source Communication Hub | Community Version
Standalone chat system developed in php, mysql and javascript
An alternative Discord client with voice support made with C++ and GTK
A New Kind of Instant Messaging
A patched version of discord, with bot login support
Mattermost Desktop application for Windows, Mac and Linux
The first messaging platform operating without user identifiers
ArmCord is a custom client designed to enhance your Discord experience
Elegant Facebook Messenger desktop app
VICIdial Contact Center Suite
Mumble is an open-source, low-latency, high quality voice chat
Open source machine learning framework to automate text conversations
A glossy Matrix collaboration client for the web
Tiny alternative Discord client with a smaller footprint and support
WhatsApp library for NodeJS that connects through the browser app
Program for filesharing using Direct Connect and ADC protocols
A simple unofficial Discord client to use as an example