1.tinode / chatInstant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbotschatchat-applicationchatappgogolanginstant-messaging+14 moreGoGPL-3.014K total2.1K forks+11 starsfrom 13,536 · score 2.48
2.fonoster / routr⚡ The future of programmable SIP servers.sipwebrtcvoipinstant-messagingimsasterisk+12 moreTypeScriptMIT1.7K total184 forks+9 starsfrom 1,716 · score 2.30
3.movim / movimMovim - Decentralized social platformmovimphpxmppsocial-networkinstant-messagingchatPHPAGPL-3.02.1K total287 forks+2 starsfrom 2,067 · score 1.10
4.chat-sdk / chat-sdk-iosChat SDK iOS - Open Source Mobile Messengerchat-sdkfirebasemessaginginstant-messagingmessengersdk+8 moreObjective-COther license920 total274 forks+1 starsfrom 919 · score 0.69