Voice XML Enabling Software (VXES) is an application that connects a VoiceXML Interpreter, a telephony platform, and MRCP servers that provide services for Automatic Speech Recognition and Text to Speech Synthesis. C++, Windows & Linux OS supported
Mel McGee's Talkbots is a complete multi-browser, multi-platform talking head application in SVG suitable for web sites, or as an avatar for your programs. Text to speech (TTS) synthesis is sent using optional MP3 audio to lip synch ing characters.