ADAMANT decentralized Messenger, progressive web application
Elegant Facebook Messenger desktop app
The original full-platform IM communication layer framework
Telegram Web A, GPL v3
WhatsApp library for NodeJS that connects through the browser app
A cross-platform app ecosystem, bringing iMessage to Android, PC
The official MacOS, Windows, and Linux clients for Pulse SMS
Lghtweight cross-platform instant messaging app
Mixin Messenger desktop app for macOS, iPadOS, Linux, and Windows
Direct peer-to-peer chat for Windows, Linux, and Android
Smoke: Android Crypto Chat Messenger
Flash message middleware for Connect and Express