I get to play with VB.net every once in a while.

A stop watch to run on Windows:

An outgrowth of the stop watch was the Job CLock.

The Job Clock keeps track of billable time in tenths of hours. It also has the stopwatch features: (The Job selection [A, B, C, etc] does not show on some operating systems).

If you would like to try these just download the ZIP file.