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
Telegram Desktop messaging app
ArmCord is a custom client designed to enhance your Discord experience
A patched version of discord, with bot login support
An alternative Discord client with voice support made with C++ and GTK
Psi IM — Qt-based XMPP client
Development toolkit for Web Services and XML data bindings for C & C++
Psi+ Project — development branch of Psi XMPP client
Tiny alternative Discord client with a smaller footprint and support
An intranet chat application that does not require a server.
Elegant Facebook Messenger desktop app
Mattermost Desktop application for Windows, Mac and Linux
The first messaging platform operating without user identifiers
Low-latency, high quality voice chat for gamers
A New Kind of Instant Messaging
Private messenger for Windows, Mac, and Linux
Feature rich WhatsApp Client for Desktop Linux
for Adium, Pidgin, Miranda and Telepathy IM Framework
The game engine for everyone
Mumble is an open-source, low-latency, high quality voice chat
A glossy Matrix collaboration client for the web
Take control of your Discord experience with GoofCord
WhatsApp library for NodeJS that connects through the browser app
VICIdial Contact Center Suite