MultiSwipe - Custom touchpad and touchscreen gestures
Monect - Make the best use of sensors on smart device to control PC, simulate steering wheel, game-pad...
Tablet Pro - Tablet Pro is a futuristic mix of familiar tools adapted for touch devices.
DroidPad - DroidPad lets you use your Android powered phone as a Joystick for your PC.
GestureSign - Create and assign touchscreen gestures to actions on a windows tablet.
LEA Extended Input - iOS/Android app with windows server to control functions in games via your smartphone/tablet.