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Original Geeks of Software-Defined Telecom | SignalWire

From The Creators of the #1 Open Source Telecom Stack

Known as the Original Geeks of Software-Defined Telecom, we built and maintain FreeSWITCH: the open source telecom stack the other telecom stacks are built on. Vonage, Five9, Cerner, Home Depot, Cisco, Plivo, and thousands more have our open source project at the core of their most sophisticated telecom apps.