FreeSBC
VoIP
v0.6.3
FreeSBC is a Go-based Session Border Controller that creates a protective boundary between the public internet and a private SIP switch such as FreeSWITCH or…todayApache-2.0No DockerAdvanced
Self-hosted alternatives to Commercial SBCs
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1 project· by score
Projects
Also in VoIP
Not listed as Commercial SBCs alternatives, but they cover the same ground and are worth a look.
FreeSWITCHOpen-source self-hosted softswitch replacing proprietary telecom hardware: SIP PBX with dialplan, voicemail, conferencing, WebRTC and an ESL control API.
KamailioSelf-hosted, open-source SIP signalling server for carrier-scale VoIP: registrar, proxy, load balancer and least-cost routing, with WebRTC, TLS and IMS support.
RoutrA self-hosted SIP server handling signaling only, built as cloud-native gRPC services. Works with Asterisk and FreeSWITCH media servers.
AsteriskAsterisk is a self-hosted, open-source PBX and telephony toolkit written in C for business telephone systems with VoIP/SIP, PSTN, and APIs (AMI, ARI, AGI).
FusionPBXFusionPBX is a self-hosted, open-source PBX web interface for FreeSWITCH providing multi-tenant VoIP, call center, and device provisioning for businesses.
openSIPSOpen-source SIP proxy/server for VoIP, video, IM, and presence with modular architecture and high throughput.
About these Commercial SBCs alternatives
1 open-source, self-hosted alternatives to Commercial SBCs are listed here, ranked by popularity, maintenance and documentation.
- Highest rated
- FreeSBC (270 GitHub stars, Apache-2.0 license, written in Go)
- Recently updated
- FreeSBC v0.6.3 on 2026-10-28
Commercial SBCs alternatives compared
| Project | License | Language | Stars | Docker | Setup | Latest release | Score |
|---|---|---|---|---|---|---|---|
| FreeSBC | Apache-2.0 | Go | 270 | — | Advanced | v0.6.3 | 48 |