Gestouch
Gestouch: multitouch gesture recognition library for Flash
...Works with any display list hierarchy structures: native DisplayList (pure AS3/Flex/your UI framework), Starling or ND2D (Stage3D) and 3D libs. Doesn’t require any additional software (may use runtime’s build-in touch support). Works across all platforms (where Flash Player or AIR run of course) in exactly same way. Extendable. You can write your own application-specific gestures.