MLlib is a NDS multi-touch library.

Release notes from hillbilly:

I finally finished my library based on Felix’s code ( http://blog.dev-scene.com/felix/2007/06/10/multitouch-demo/ ) and thought to release it with one demo in it. (I’ll keep the photo demo to myself for now..). The demo is a little drumming application. Pretty simple but it still has some bugs. Please post back about any findings regarding this library. All hail the Nintendo DS and PAlib!

http://forum.palib.info/index.php?topic=6028.0