Asterisk vs openSIPS
A side-by-side comparison of Asterisk and openSIPS — pricing, license, deployment, and where each tool wins.
Asterisk
asterisk.org
Easy to use but advanced IP PBX system, VoIP gateway and conference server.
openSIPS
opensips.org
SIP proxy/server for voice, video, IM, presence and any other SIP extensions.
| Feature | Asterisk | openSIPS |
|---|---|---|
| Pricing | Free | Free |
| Model | Open-source | Open-source |
| License | CC-BY-SA-3.0 | CC-BY-SA-3.0 |
| Deployment | Self-hosted | Self-hosted |
| Category | Communication - SIP | Communication - SIP |
| Self-hosted | ✓Yes | ✓Yes |
| Free tier | ✓Yes | ✓Yes |
Pick Asterisk if…
- ✓You prefer Asterisk's feature set or ecosystem fit.
Pick openSIPS if…
- ✓You prefer openSIPS's feature set or ecosystem fit.
4–16hmedium risk
Plan a sprint — 4-16 engineering hours, run in parallel for a week.
Export from Asterisk: CSV, JSON
1 things to watch
- ⚠Manual data review recommended