The Open-Source Engine
Powering The World's Largest
Telephony Infrastructures.

FreeSWITCH is the open-source engine developers rely on when they need deep control over real-time communications. It provides direct access to the media and signaling layers, a modular architecture, and flexible APIs for extending your system or integrating with the rest of your environment.

Teams turn to FreeSWITCH to power their voice, video, and messaging platforms, but when the operational weight of scaling becomes too much, extend your workload to SignalWire without changing your application logic.

SignalWire was built by the FreeSWITCH team to solve the hard parts of running it at scale. FreeSWITCH gives you control, but scaling clusters, managing carriers, and adding AI features introduces operational overhead. If you want the power of FreeSWITCH without the infrastructure responsibility, SignalWire is ready to pick up where you leave off.