qTUIO is a project to develop a Qt interface for the TUIO protocol.
It should integrate with the current support for gesture and multi-touch event from Qt starting in version 4.6.0.
It's in an early stage, so if you are interested in participating join us at freenode.net on channel #qt-tuio.
The project is hosted at GitHub. http://github.com/x29a/qTUIO.
This project is under the LGPL license.