KatMouse

KatMouse is a mouse wheel enhancement utility that adds useful functionality to your wheel mouse. First of all it overcomes the requirement that the window must have keyboard focus in order for the scroll wheel to work. In addition, it allows for quick switching between active and inactive windows by simply pressing the wheel button. You can scroll most windows page wise by holding the wheel button over the window and clicking the left (up) or right (down) mouse button. Additional features include custom settings for selected applications or classes and more.