Free Zip software and Rar extractor
Calc: arbitrary precision C-like arithmetic & calculator
Arbitrary-precision CRC calculator and algorithm finder
Calculates income tax form entries, helps do your taxes.
A calculator to work with historical dates and calendars.
TI graphing calculators <-> computer communication software
Cool-down time calculator for multi-layers pipe
Convert between calendars and work with date ranges.
C# BMI Calculator with wizzard.
Science simulator and advanced calculator based on modules
C++/Qt project of a multi-type calculator.
Graphical Depth of Field Calculator
Zwicker's Loudness Calculation (ISO532B) Tools