OpenSourceProjects

Open Source Asterisk Alternatives

Discover 4 open source alternatives to Asterisk. All free, community-driven, and actively maintained.

What is Asterisk?

Open source PBX and telephony platform for building communications applications.

freeswitch

freeswitch

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.

kamailio

kamailio

Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability

routr

routr

⚡ The future of programmable SIP servers.

opensips

opensips

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.