Replace / Google Voice
Best free Google Voice alternatives (open source, self-hosted) 2026
The best open-source alternative to Google Voice is FreePBX or Asterisk, self-hosted on Railway. A PBX you host. FreePBX is GPLv3; Asterisk is GPL-2.0 — Google Voice without the hosted number seat.
Estimated save $1,200 a year.
Open the stackStart on Railway
How Google Voice compares
| Google Voice | FreePBX / Asterisk | |
|---|---|---|
| Pricing model | Hosted subscription | Open-source or fair-code license; you pay the host |
| Hosting | Vendor cloud | Self-hosted on Railway or any VPS |
| Rough monthly cost | Public list price not verified this run | Hosting only — no SaaS seat meter in this repo |
- FreePBX
GPLv3 Asterisk GUI — the published Google Voice path
- Asterisk
GPL-2.0 PBX engine FreePBX configures
FAQ
- What is the best free open-source Google Voice alternative?
- The best open-source alternative to Google Voice is FreePBX or Asterisk, self-hosted on Railway. A PBX you host. FreePBX is GPLv3; Asterisk is GPL-2.0 — Google Voice without the hosted number seat.
- Is it free?
- The FreePBX / Asterisk licenses are open source or fair-code. You still pay hosting (Railway or any VPS) and any APIs the stack calls. There is no Google Voice seat or task bill on this path.
- Can I migrate from Google Voice?
- Yes. Start with the workflows or data you actually use, then cut over. The FreePBX / Asterisk stack page has the agent prompt and the cost table; most teams rebuild the slice that matters and leave old Google Voice links until they expire.
- How do I deploy it?
- Open the FreePBX / Asterisk stack, copy the agent prompt, and deploy on Railway (one service, PORT, and a volume when the app needs disk). Placeholder: FreePBX wants Asterisk, a database, and SIP ports — a VPS more than a single Railway web service. Document the VPS path; no one-click template in this repo yet — Start on Railway.
- What does this replace?
- Google Voice. The published small-team estimate on this stack is $1,200 a year.
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