BarCalc Description:

BarCalc allows you to have a powerful calculator permanently at your fingertips without taking up valuable screen space. Whenever you need to work something out, you'll be able to simply click on the BarCalc icon the Start Bar and type in your sum. BarCalc can perform ordinary arithmetic, trigonometry, comparisons, random number generation, factorials, boolean operations, and much more.

(To run this program, the VB6 runtime file Msvbvm60.dll must be installed in your Windows\System folder. You may well have this file already, but if not, you can download it free from Microsoft's web site and many other places.)