Franz is a free messaging app for services like WhatsApp, Slack, etc,
WhatsApp library for NodeJS that connects through the browser app
A New Kind of Instant Messaging
Private messenger for Windows, Mac, and Linux
The game engine for everyone
A realtime distributed messaging platform
Simple agent showing alert when receiving message in Microsoft Teams
You can message and share files inside your intranet without a server.
Development toolkit for Web Services and XML data bindings for C & C++
Tool for building chat bots, apps and custom integrations
A GNU/Linux operating system accessible for visually impaired.
A lightweight Discord client mod focused on simplicity and performance
Free, portable and lightweight Internet Relay Chat server
The Free & Popular FLARUM Web Software in a Complete Virtual Machine
Standalone chat system developed in php, mysql and javascript
Internet Discussion Boards is a message board system by Game Maker 2k.
Python chatbot framework with Natural Language Understanding
Chatbot platform for various instant messenger
Graphical message and file encryption tool
Download mp3 music from IRC
Machine learning, conversational dialog engine for creating chat bots
Chat over SSH
Erwin is an IRC-bot in Perl, using POE.