Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots
Ermis: A decentralized, secure and open-source messaging platform for real-time communication.
Movim - Decentralized social platform
Decentralized private messenger with chat-shared tools and games for Desktop
Spacebar server - A reimplementation of the Discord.com backend, built with Typescript and love
Self-hostable instant messaging server compatible with classic AIM and ICQ clients. (Independently developed, not affiliated with or endorsed by AOL)