http://www.infomus.dist.unige.it/eywindex.html
The EyesWeb open platform (free download here) has been originally conceived for supporting research on multimodal expressive interfaces and multimedia interactive systems. EyesWeb has also been widely employed for designing and developing real-time dance, music, and multimedia applications
http://www.cs.aue.auc.dk/~rea/eyesweb/
http://vvvv.meso.net/tiki-index.php
vvvv is a toolkit for real time video synthesis. It is designed to facilitate the handling of large media environments with physical interfaces, real-time motion graphics, audio and video that can interact with many users simultaneously.
