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