Zanzibar OpenIVR is a complete, standards based, open source IVR. It contains a MRCPv2 Server with the Sphinx4 ASR engine and FreeTTS speech synthesizer. It has a voiceXML interpreter so that you can deploy and run voiceXML applications. It can be integrated with a VOIP PBX (like Asterisk) using SIP and RTP VOIP standards.
Zanzibar open IVR project team is proud to introduce an alpha version of the first fully open source IVR. Zanzibar is a standards based speech recognition IVR with a MRCPv2 server that allows you deploy voiceXML applications. Zanzibar integrates with IP PBX using SIP and RTP standards.