Best self-hosted Communication - SIP apps
13 open source Communication - SIP tools you host on your own server — with full control of your data and no per-user cost.
FreeSWITCH
★ 4,950Scalable open source cross-platform telephony platform.
Asterisk
★ 3,316Easy to use but advanced IP PBX system, VoIP gateway and conference server.
Kamailio
★ 2,855Modular SIP server (registrar/proxy/router/etc).
SIPCAPTURE Homer
★ 1,975Troubleshooting and monitoring VoIP calls.
Routr
★ 1,688Lightweight SIP proxy, location server, and registrar for a reliable and scalable SIP infrastructure.
openSIPS
★ 1,482SIP proxy/server for voice, video, IM, presence and any other SIP extensions.
FusionPBX
★ 1,014Web interface for multi-platform voice switch called FreeSWITCH.
Flexisip
★ 185Complete, 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.
3CX
Full-featured PABX system, with call queues, built-in web conferencing, live chat and social media messaging all on one system.
Freepbx
Web-based open source GUI that controls and manages Asterisk.
SIP3
VoIP troubleshooting and monitoring platform.
Wazo
Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API.
Yeti-Switch
Transit class4 softswitch(SBC) with integrated billing and routing engine and REST API.
Frequently asked questions
What are the best self-hosted Communication - SIP tools?
Among the 13 options, the most popular include FreeSWITCH, Asterisk, Kamailio. Compare license, platform and popularity in the list below.
Is there a free open source alternative for Communication - SIP?
Yes — all 13 tools on this page are open source and you run them on your own server, with no monthly fee.
Where can I host a Communication - SIP app?
On a home server (homelab) or a cheap VPS from ~€4/mo. See the suggestions on this page.