VoiceXML Gateway for SIP based VOIP service traditional PSTN phone services and Skype. TAPI development API for interactive telephony application. High level development platform based on W3C VoiceXML. Supports text-to-speech voice recognition DTMF tones for both inbound outbound apps. Works with SIP based VOIP services Skype and traditional phone services. Voicent Voice XML gateway API SDK tutorial sample code available online. Free download at http:www.voicent.comdownload. Developer can integrate Voicent Gateway easily with http web interface command line interface. Samples are available in C++ Perl and PHP languages. Applications such as Auto Dialers phone alert software and inbound IVR systems can be created without using TAPI programming. Supports text-to-speech voice recognition DTMF tones for both inbound and outbound apps. An open source based web server is included but not required. Voicent Developer SDK is also available for commercial developers. A command line simulator is included in the SDK to accelerate development process. Voicent provides developer network annual subscription and support. Includes multi-phone line support. A must have SDK toolkit for Voice XML and telephony application developers.