SignalWire
The communications control plane
SignalWire is a programmable cloud communications platform for voice, messaging, video, and AI agents, built by the creators of FreeSWITCH. It addresses the problem of applications having to rebuild call state, routing, and session tracking from raw events, by owning the state, lifecycle, and routing of each interaction so applications can direct call behavior instead.
The platform provides a programmable control plane over FreeSWITCH media engines, with stateful call objects, addressable resources such as phone numbers, AI agents, queues, and video rooms, and AI orchestration that runs inside the call as a state machine. It supports voice calling and routing, video conferencing and bridging, protocol translation, programmable call control, and carrier-grade media handling. The Python Relay SDK is shown for controlling live calls over a persistent connection. Solutions include contact centers, customer notifications, IVR and call routing, and voice AI agents.
SignalWire is aimed at developers and teams building communication products, contact centers, and AI-driven voice applications. Packaging includes a free SignalWire account required for FreeSWITCH downloads, a free self-hosted community edition of FreeSWITCH, a paid self-hosted enterprise branch with commercial modules and support, and a paid cloud-hosted SignalWire Platform edition.
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