Scotts Binary Clock is a
It's a little gadget or conversation piece for your desktop. It really doesn't serve much of a practical purpose, unless your goal is to display the time in a format that nobody but you can read.
Emphasis has been placed on making the clock cool looking and realistic (the LEDs in the clock were obtained from taking pictures of real-world LEDs).
Several different sizes of binary clocks are available -- you can select between large, small, and horizontal versions.
There are also several different backgrounds including flat black, brushed aluminum, and mahogany. There is even a new "transparent" background that many people have been asking for! You can toggle the LEDs between round, square, and rectangular and you can select several different LED colors -- red, blue, amber, green, etc.
Note: You are free to use this software for noncommercial use