Strokeit - StrokeIt is an advanced mouse gesture recognition engine and command processor.
StrokesPlus.net - Mouse Gestures and More for Windows
crxMouse Chrome Gestures - Boost browsing productivity with mouse navigation shortcuts - simple Mouse Gestures, Super Drag, Wheel Gestures, Rocker Gestures.
Easystroke - Easystroke is a gesture-recognition application for X11.
Foxy Gestures - A web extension alternative to FireGestures created by a long time FireGestures user.
smartUp Gestures - smartUp is a Google Chrome and Firefox extension which boost productivity by you mouse.