From Peter Velosy:
Virtual Metronome a professional metronome application for musicians and hobbyists alike!
Visual feedback: you can also see the tempo movement on the screen.
A free choice of tempo between 20 to 300 BPM (Beats per minute).
With a table of the most common tempo expressions
Ability to use irregular or unusual measures (5/4, 7/8, 12/32, etc.)
Ability to save tempo settings under a name, so that they can easily be retrieved anytime.