Browse free open source Chat software and projects below. Use the toggles on the left to filter open source Chat software by OS, license, language, programming language, and project status.
An intranet chat application that does not require a server.
The FetLife App on Android
You can message and share files inside your intranet without a server.
A universal instant messaging (IM) program
Dark Mode tốt nhất cho Zalo
A Windows client for the Direct Connect networks
Mattermost Desktop application for Windows, Mac and Linux
Dev tools to reliably understand text and automate conversations
Development toolkit for Web Services and XML data bindings for C & C++
Tiny alternative Discord client with a smaller footprint and support
A glossy Matrix collaboration client for the web
WhatsApp library for NodeJS that connects through the browser app
Psi IM — Qt-based XMPP client
Psi+ Project — development branch of Psi XMPP client
A simple unofficial Discord client to use as an example
A Gtk3 Discord client in Golang
The game engine for everyone
Take control of your Discord experience with GoofCord
A private messenger for iOS
The pinnacle of file-sharing and chat - an innovative DC client!
An alternative Discord client with voice support made with C++ and GTK
Tool for building chat bots, apps and custom integrations
The first messaging platform operating without user identifiers
Chat over SSH