⚡ The future of programmable SIP servers.
The core of an open-source, distributed, highly scalable platform designed to provide robust telecom services
The official Asterisk Project repository.
Official FusionPBX - A full-featured domain based multi-tenant PBX and voice switch for FreeSwitch.
OpenSIPS is a GPL implementation of a multi-functionality SIP Server that targets to deliver a high-level technical solution (performance, security and quality) to be used in professional SIP server platforms.
The main features of opensips/opensips are: Voice And Video, VoIP and Telephony.
Open-source alternatives to opensips/opensips include: inextrix/astpp — Open Source VoIP Billing Solution http://www.astppbilling.org | Report a bug… 2600hz/kazoo — The core of an open-source, distributed, highly scalable platform designed to provide robust telecom services. asterisk/asterisk — The official Asterisk Project repository. fonoster/routr — ⚡ The future of programmable SIP servers. fusionpbx/fusionpbx — Official FusionPBX - A full-featured domain based multi-tenant PBX and voice switch for FreeSwitch. kamailio/kamailio — Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility,…