Telegram Desktop messaging app
Private messenger for Windows, Mac, and Linux
A Decentralized, Onion Routed, Private Messenger
A New Kind of Instant Messaging
The first messaging platform operating without user identifiers
Elegant Facebook Messenger desktop app
WhatsApp library for NodeJS that connects through the browser app
LXMF client for Android, Linux and macOS to communicate with people
Bluetooth mesh chat, IRC vibes
Open source machine learning framework to automate text conversations
In-memory message queue with an Amazon SQS-compatible interface
Home to the Signal Protocol and other cryptographic primitives
A reference implementation of the SimpleX Messaging Protocol
Desktop client for Facebook Messenger
Franz is a free messaging app for services like WhatsApp, Slack, etc,
Python chatbot framework with Natural Language Understanding
Telegraph is a Laravel package for fluently interacting with Telegram
A free (libre) open source, mobile OS for Ethereum
A Tox-based instant messaging and video chat client
Distributed instant messaging system for developers
A universal instant messaging (IM) program
Development toolkit for Web Services and XML data bindings for C & C++
A GNU/Linux operating system accessible for visually impaired.
PHP & MySQL based CMS with messenger
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.