A nice little calculator with all the common functions and some basic trigonometry functions. Stays on top of other windows. Minimizes to system tray. Basic trigonometry functions.
Displays operand while calculating.
This program can calculate the interest rate you pay for loans. It is wizard style, and calculates using a series of simple question on your loan. Afterwards it makes a remark on the result. Very simple to use but useful, as it might protect you from usury. It can make conversions between more than 600 units in 20 categories.