Feewhee (Feel the Wheel) is a utility to enhance your mouse wheel with additional functions. With a single turn, you may resize windows or change the transparency.
Feewhee does not have a user interface. Once started, it runs quietly in background.
Put the mouse pointer to a window title bar and roll the mouse wheel to resize the window. Hold down the Shift key when rolling to change the window's transparency.
If you want to disable Feewhee then simply run it again.