TouchScript is a family of multi-touch frameworks for Unity3d and Flash. It is much more than a handful of routines to receive touch events from different sources. Inspired by iOS, TouchScript makes handling complex gesture interactions on large touch surfaces much easier. Unity3d and Flash implementations are developed to work together in Scaleform environment.

• Easy and intuitive API.
• Works on PC, Mac, iOS and Android.
• Manages simultaneous gesture recognition within scene hierarchy (inspired by iOS).
• Comes with many commonly used gestures. Easy to write custom ones.
• Supported input sources: TUIO, mouse, iOS and native Windows 7 touch.
• Groups touch points into clusters on big touch surfaces.
• Easy to test multi-touch gestures without actual multi-touch device using TUIOPad on iOs and TUIODroid on Android.
• It's free and open-source. Licensed under MIT license.

Check out official docs at interactivelab.github.com/TouchScript/.