#1
Kamailio is an open source SIP signaling server for scalable VoIP and real-time communication platforms, supporting routing, load balancing, WebRTC, and IMS/VoLTE.
2.9k stars1.1k forkslast commit Actively maintained
3 self-hosted Ribbon Communications Session Border Controller (SBC) alternatives
Session Border Controller (SBC) for carrier and enterprise networks that secures and manages SIP/VoIP traffic. Provides SIP trunking interoperability, protocol normalization, media handling, NAT traversal, routing, and DoS/fraud protection; available as appliance, virtual and cloud deployments.
Alternatives to Ribbon Communications Session Border Controller (SBC)
#2
Routr is a programmable SIP server (proxy/registrar/location) for building scalable VoIP infrastructure with APIs, multi-tenancy, and Kubernetes-ready deployment.
1.7k stars179 forksMITlast commit Actively maintained
Carrier-grade VoIP softswitch/SBC for routing, billing, and managing SIP traffic, with LCR, fraud control, and high-availability deployment options.
Activity unknown
What replacing Ribbon Communications Session Border Controller (SBC) actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 3 shipped a commit in the last six months. Licences in this list: MIT. In exchange you take on hosting, backups and updates yourself.
Browse everything in VoIP / SIP & PBX.
