F FreeSWITCH Scalable open source cross-platform telephony platform. Self-hostedOpen sourceCommunication - SIP 5 257MPL-2.0Cmis à jour le oct. 2026
Asterisk Easy to use but advanced IP PBX system, VoIP gateway and conference server. Self-hostedOpen sourceCommunication - SIP 3 648GPL-2.0Cmis à jour le oct. 2026
K Kamailio Modular SIP server (registrar/proxy/router/etc). Self-hostedOpen sourceCommunication - SIP 2 982GPL-2.0Cmis à jour le oct. 2026
S SIPCAPTURE Homer Troubleshooting and monitoring VoIP calls. Self-hostedOpen sourceCommunication - SIP 2 025AGPL-3.0Nodejsmis à jour le oct. 2026
R Routr Lightweight SIP proxy, location server, and registrar for a reliable and scalable SIP infrastructure. Self-hostedOpen sourceCommunication - SIP 1 717MITDockermis à jour le oct. 2026
O openSIPS SIP proxy/server for voice, video, IM, presence and any other SIP extensions. Self-hostedOpen sourceCommunication - SIP 1 544GPL-2.0Cmis à jour le oct. 2026
FusionPBX Web interface for multi-platform voice switch called FreeSWITCH. Self-hostedOpen sourceCommunication - SIP 1 080MPL-1.1PHPmis à jour le oct. 2026
F Flexisip Complete, modular and scalable SIP server, includes a push gateway, to deliver SIP incoming calls or text messages on mobile device platforms where push notifications are required to receive information when the app is not active in the foreground. Self-hostedOpen sourceCommunication - SIP 193AGPL-3.0Cmis à jour le oct. 2026
3CX Full-featured PABX system, with call queues, built-in web conferencing, live chat and social media messaging all on one system. Self-hostedGratuitCommunication - SIP ProprietaryUnknown
Freepbx Web-based open source GUI that controls and manages Asterisk. Self-hostedOpen sourceCommunication - SIP GPL-2.0PHP
S SIP3 VoIP troubleshooting and monitoring platform. Self-hostedOpen sourceCommunication - SIP Apache-2.0Java
W Wazo Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API. Self-hostedOpen sourceCommunication - SIP GPL-3.0Python
Y Yeti-Switch Transit class4 softswitch(SBC) with integrated billing and routing engine and REST API. Self-hostedOpen sourceCommunication - SIP GPL-2.0C++