Best self-hosted Communication - SIP software in 2026

SIP/IPBX telephony software.

We track 13 open-source, self-hosted Communication - SIP apps. 8 of them had commits in the last 90 days, 3 can run with Docker, and the most common licenses are GPL-2.0 (5), AGPL-3.0 (2), MPL-2.0 (1). The most-used languages are C, PHP, Nodejs. Below are the top picks by GitHub stars, followed by every app ranked by stars weighted by maintenance health.

Alternatives to DiscordAlternatives to SkypeAlternatives to RingCentralAlternatives to Google VoiceAlternatives to TeamSpeak

Top 5 by GitHub stars

#AppStarsHealthLast activityLicenseLanguageDocker
1FreeSWITCH5.3kActive2026-11-09MPL-2.0C–
2Asterisk3.7kActive2026-11-05GPL-2.0C, deb–
3Kamailio3kActive2026-11-10GPL-2.0C, deb–
4SIPCAPTURE Homer2kActive2026-11-09AGPL-3.0Nodejs, Go✓
5Routr1.7kActive2026-11-06MITDocker, K8S✓
  1. FreeSWITCH — Scalable cross-platform telephony platform.
  2. Asterisk — Easy to use but advanced IP PBX system, VoIP gateway and conference server.
  3. Kamailio — Modular SIP server (registrar/proxy/router/etc).
  4. SIPCAPTURE Homer — Troubleshooting and monitoring VoIP calls.
  5. Routr — Lightweight SIP proxy, location server, and registrar for a reliable and scalable SIP infrastructure.

Head-to-head comparisons

Asterisk vs FreeSWITCHFreeSWITCH vs KamailioFreeSWITCH vs SIPCAPTURE HomerAsterisk vs KamailioAsterisk vs SIPCAPTURE HomerKamailio vs SIPCAPTURE Homer

All 13 self-hosted Communication - SIP apps

Ranked by GitHub stars weighted by maintenance health.

FreeSWITCH

Scalable cross-platform telephony platform.

Active ★ 5.3k MPL-2.0 ~$3.5/mo

Asterisk

Easy to use but advanced IP PBX system, VoIP gateway and conference server.

Active ★ 3.7k GPL-2.0 ~$3.5/mo

Kamailio

Modular SIP server (registrar/proxy/router/etc).

Active ★ 3k GPL-2.0 ~$3.5/mo

SIPCAPTURE Homer

Troubleshooting and monitoring VoIP calls.

Active ★ 2k AGPL-3.0 🐳 Docker~$5/mo

Routr

Lightweight SIP proxy, location server, and registrar for a reliable and scalable SIP infrastructure.

Active ★ 1.7k MIT 🐳 Docker~$5/mo

openSIPS

SIP proxy/server for voice, video, IM, presence and any other SIP extensions.

Active ★ 1.5k GPL-2.0 ~$3.5/mo

FusionPBX

Web interface for multi-platform voice switch called FreeSWITCH.

Active ★ 1.1k MPL-1.1 ~$5/mo

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.

Active ★ 194 AGPL-3.0 🐳 Docker~$3.5/mo

3CX

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

Unknown ⊘ Proprietary ~$5/mo

Freepbx

Web-based GUI that controls and manages Asterisk.

Unknown GPL-2.0 ~$5/mo

SIP3

VoIP troubleshooting and monitoring platform.

Unknown Apache-2.0 ~$10/mo

Wazo

Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API.

Unknown GPL-3.0 ~$5/mo

Yeti-Switch

Transit class4 softswitch(SBC) with integrated billing and routing engine and REST API.

Unknown GPL-2.0 ~$5/mo

Frequently asked questions

What is the best self-hosted Communication - SIP software in 2026?

By GitHub stars, the most popular self-hosted Communication - SIP apps are FreeSWITCH (5,294 stars), Asterisk (3,676 stars), Kamailio (2,994 stars). Popularity is only one signal: also check maintenance health, license and whether it fits your setup.

How many self-hosted Communication - SIP apps are actively maintained?

8 of the 13 apps listed had commits in the last 90 days; for 5 we have no repository activity data.

Which self-hosted Communication - SIP apps can I run with Docker?

3 of the 13 apps can run with Docker.

Which licenses do self-hosted Communication - SIP apps use?

The most common licenses in this category are GPL-2.0 (5 apps), AGPL-3.0 (2 apps), MPL-2.0 (1 apps).

How much does it cost to self-host Communication - SIP software?

The software itself is free to download. Based on our rough hardware estimates, the cheapest suitable VPS plan starts at about $3.5/month (median $5/month across apps in this category). Several light apps can share one server.

Figures from GitHub and Docker Hub as of 2026-11-15; hosting costs are rough estimates.