Multi-touch client is an open source project exploring multi-touch:
A multitouch API for Flash including support for extensible touch actions, arbitrarily sized displays, and a limitless number of active fingers.
Software simulated touch events are also supported to allow for software to be tested and developed on computers lacking multitouch hardware.
The Multitouch Client API is built in ActionScript 2 and communicates with the Multitouch Server via network socket connection.
[HT: zambetti]
Stephen Bateman says
That last one demo, with the mind map, is pretty sick.