What is JVoiceXML? A free VoiceXML interpreter for JAVA with an open architecture for custom extensions. Demo implementation platforms are supporting JAVA APIs such as JSAPI and JTAPI. JVoiceXML is an implementation of VoiceXML 2.1, the Voice Extensible Markup Language, specified at http://www.w3.org/TR/voicexml21/. This is an extension to VoiceXML 2.0, specified at http://www.w3.org/TR/voicexml20