OpenZoep: An Open Source VoIP Engine

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OpenZoep (pronounced “open soup”) is a client-side telephony and instant messaging (IM) communications engine. It supports computer-to-computer (peer-to-peer) VoIP calls, instant messaging, and outbound PSTN and SIP calls to free and premium SIP providers. OpenZoep is available under the GPL license, as well as a commercial license for companies that do not wish to publish the source code of their commercial products based on OpenZoep.

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