Calculator++
Precision Trigonometry: Advanced Calculator for Complex Math
RxCalc is a calculator for the analysis of multi-stage receiver.
It's a fork of Free Zip software and Rar extractor by Giorgio Tani.
A calculator to work with historical dates and calendars.
EuroNCAP Grid Point Calculator
Calculator with fractions
Convert between calendars and work with date ranges.
A calculator for doing lots of things.
3-DPhysicsSim is an interactive 3-D physics simulator.
Science simulator and advanced calculator based on modules
A multi-step heat calculator.