Calculates income tax form entries, helps do your taxes.
Arbitrary-precision CRC calculator and algorithm finder
A friendly Forth compiler with a little difference
Calc: arbitrary precision C-like arithmetic & calculator
Scientific/engineering firmware repurposing HP business calculators!
A files hash calculator for Windows and macOS.
A powerful arbitrary-precision calculator.
Open-source C/C++ math engine for advanced scientific computing
QxCalc, a scriptable calculator
Simple Calendar with extras
Command-line calculator and libray.
Byte CALculator for storage conversions and calculations
Financial Derivatives Calculator with 171+ Models (Options Calculator)
an interactive "rolling paper" calculator
A calculator like programming language
Simple RPN desktop calculator, implemented with wxWidgets and Lua.
command line calculator for large numbers
Hackings on calculators.
A simple calculator for complex number calculation.