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
A Windows client for the Direct Connect networks
Dark Mode tốt nhất cho Zalo
An alternative Discord client with voice support made with C++ and GTK
Tiny alternative Discord client with a smaller footprint and support
Dev tools to reliably understand text and automate conversations
Mattermost Desktop application for Windows, Mac and Linux
WhatsApp library for NodeJS that connects through the browser app
Psi IM — Qt-based XMPP client
Psi+ Project — development branch of Psi XMPP client
Development toolkit for Web Services and XML data bindings for C & C++
A simple unofficial Discord client to use as an example
ArmCord is a custom client designed to enhance your Discord experience
Tool for building chat bots, apps and custom integrations
Java wrapper for the popular chat & VOIP service
A framework agnostic PHP library to build chat bots
Private messenger for Windows, Mac, and Linux
The first messaging platform operating without user identifiers
A Gtk3 Discord client in Golang
The pinnacle of file-sharing and chat - an innovative DC client!
A free peer-to-peer (P2P) BitTorrent file sharing client