Telegram Desktop messaging app
Desktop Telegram client with good customization and Ghost mode.
Saves Discord chat logs to a file
The first messaging platform operating without user identifiers
Private messenger for Windows, Mac, and Linux
A New Kind of Instant Messaging
Elegant Facebook Messenger desktop app
LXMF client for Android, Linux and macOS to communicate with people
WhatsApp library for NodeJS that connects through the browser app
Telegraph is a Laravel package for fluently interacting with Telegram
A Decentralized, Onion Routed, Private Messenger
A free and open source instant messaging and VoIP platform
Franz is a free messaging app for services like WhatsApp, Slack, etc,
A Tox-based instant messaging and video chat client
In-memory message queue with an Amazon SQS-compatible interface
A free (libre) open source, mobile OS for Ethereum
A multi-channel SMS sending wheel
Home to the Signal Protocol and other cryptographic primitives
Desktop client for Facebook Messenger
Open source machine learning framework to automate text conversations
Python chatbot framework with Natural Language Understanding
A reference implementation of the SimpleX Messaging Protocol
The original full-platform IM communication layer framework
Bluetooth mesh chat, IRC vibes
Distributed instant messaging system for developers