Self-hostable software: SIP Communication (17)

Janus is an open source WebRTC server for building real-time communication applications.

ejabberd is an open-source, scalable realtime platform that includes an XMPP server, MQTT broker, and SIP service.

FreeSWITCH is a software-defined telecom stack for voice-over-IP, SIP, SMS, and telecom app integrations.

An open source PBX and telephony toolkit for building and running voice communication systems.

MiroTalk SFU is a self-hosted WebRTC video conferencing platform built on Mediasoup for meetings, webinars, and live broadcasting.

Kamailio is an open source SIP signaling server for VoIP, instant messaging, and presence.

HOMER 10 is an open-source VoIP and RTC observability framework for real-time packet capture, troubleshooting, and monitoring.

Routr is a lightweight SIP proxy, location server, and registrar for building reliable, scalable SIP infrastructure.

OpenSIPS is a GPL-licensed SIP server implementation for building and managing VoIP signaling infrastructure.

FusionPBX is a web-based multi-tenant PBX and VoIP server platform built on FreeSWITCH for business telephony, call center, voicemail, fax, and conferencing use cases.

Flexisip is a modular, scalable SIP server suite for routing calls, presence, conferencing, push notifications, and SIP trunking.

Full-featured PABX system, with call queues, built-in web conferencing, live chat and social media messaging all on one system.