Signalwire
Build and Extend Your Voice AI Applications
Palo Alto, Remote · Founded 2017 · $71.5M raised
- Headquarters
- Palo Alto
- Employees
- 51–200
- Founded
- 2017
- Business Model
- B2B
- Website
- signalwire.com
- Total Funding
- $71.5M
- Last Round
- $30.0M Series BMar 2022
- Rounds
- 4
About
SignalWire is a programmable unified communications control plane that orchestrates voice, messaging, video, and AI interactions in real-time. Founded by the creators of FreeSWITCH, it provides developer-first APIs and SDKs enabling businesses to build ultra-low latency voice AI agents, contact centers, and real-time communication applications. The platform owns its full telecom infrastructure, delivering sub-500ms response times without third-party dependencies.
Summary
Signalwire is a Developer Tools company based in Palo Alto, Remote, founded in 2017. It has raised $71.5M in total across 4 rounds, most recently a $30.0M Series B round in Mar 2022. Investors include Dean Drako, Prosperity7 and Samsung Next.
Tech & App Stack
8 technologies & apps tracked
Every product and vendor across these categories, with where each signal came from.
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Funding History
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Mar 2022
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Seed through Series B — per-round amounts, valuations, and who invested in each round.
Investors
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