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