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