Self-hosted alternatives to Google Voice
Want phone numbers and calling without handing your data to Google Voice? These 12 self-hosted apps run on your own server (most are open source; licenses are listed below). Cheapest estimated hosting starts at about $3.5/month.
About Google Voice: Google's phone-number, calling and texting service.
| App | Health | Stars | License | Docker | RAM (est.) | From |
|---|---|---|---|---|---|---|
| FreeSWITCH | Active | 5.3k | MPL-2.0 | – | 512 MB | $3.5/mo |
| Asterisk | Active | 3.7k | GPL-2.0 | – | 512 MB | $3.5/mo |
| Kamailio | Active | 3k | GPL-2.0 | – | 512 MB | $3.5/mo |
| SIPCAPTURE Homer | Active | 2k | AGPL-3.0 | ✓ | 1 GB | $5/mo |
| Routr | Active | 1.7k | MIT | ✓ | 1 GB | $5/mo |
| openSIPS | Active | 1.5k | GPL-2.0 | – | 512 MB | $3.5/mo |
| FusionPBX | Active | 1.1k | MPL-1.1 | – | 1 GB | $5/mo |
| Flexisip | Active | 195 | AGPL-3.0 | ✓ | 512 MB | $3.5/mo |
| 3CX | Unknown | – | ⊘ Proprietary | – | 1 GB | $5/mo |
| Freepbx | Unknown | – | GPL-2.0 | – | 1 GB | $5/mo |
| SIP3 | Unknown | – | Apache-2.0 | – | 2 GB | $10/mo |
| Wazo | Unknown | – | GPL-3.0 | – | 1 GB | $5/mo |
The options in detail
1. FreeSWITCH
Scalable cross-platform telephony platform.
Active Last commit 2026-10-28. Latest release v1.11.3 (2026-08-28). Needs roughly 512 MB RAM. How to run it →
2. Asterisk
Easy to use but advanced IP PBX system, VoIP gateway and conference server.
Active Last commit 2026-11-04. 10+ releases in the past year. Latest release 24.0.0-rc4 (2026-10-29). Needs roughly 512 MB RAM. How to run it →
3. Kamailio
Modular SIP server (registrar/proxy/router/etc).
Active Last commit 2026-11-05. Latest release 6.1.5 (2026-10-15). Needs roughly 512 MB RAM. How to run it →
4. SIPCAPTURE Homer
Troubleshooting and monitoring VoIP calls.
Active Last commit 2026-11-04. Latest release 11.0.375 (2026-11-03). Needs roughly 1 GB RAM. How to run it →
5. Routr
Lightweight SIP proxy, location server, and registrar for a reliable and scalable SIP infrastructure.
Active Last commit 2026-11-05. 10+ releases in the past year. Latest release v2.32.1 (2026-11-04). Needs roughly 1 GB RAM. How to run it →
6. openSIPS
SIP proxy/server for voice, video, IM, presence and any other SIP extensions.
Active Last commit 2026-11-04. Needs roughly 512 MB RAM. How to run it →
7. FusionPBX
Web interface for multi-platform voice switch called FreeSWITCH.
Active Last commit 2026-11-05. 2 releases in the past year. Latest release 5.6.5 (2026-09-21). Needs roughly 1 GB RAM. How to run it →
8. 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 Last commit 2026-11-04. 10+ releases in the past year. Latest release 2.6.2 (2026-10-01). Needs roughly 512 MB RAM. How to run it →
9. 3CX
Full-featured PABX system, with call queues, built-in web conferencing, live chat and social media messaging all on one system.
Unknown Needs roughly 1 GB RAM. How to run it →
10. Freepbx
Web-based GUI that controls and manages Asterisk.
Unknown Needs roughly 1 GB RAM. How to run it →
11. SIP3
VoIP troubleshooting and monitoring platform.
Unknown Needs roughly 2 GB RAM. How to run it →
12. Wazo
Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API.
Unknown Needs roughly 1 GB RAM. How to run it →
Why self-host instead of Google Voice?
- Own your data — it lives on a server you control, with backups you decide on.
- Predictable cost — a small VPS often replaces per-seat pricing for a whole team or family.
- No lock-in — open-source licenses let you keep running the software even if a vendor disappears.
The trade-off: you are responsible for updates, backups and security. Pick an app marked Active (a commit in the last 90 days) and with Docker support for the easiest ride.
Browse related categories
Other alternatives guides
Google Voice is a trademark of its owner; this site is not affiliated with it. Listings come from the community-maintained awesome-selfhosted list.