Multiprecision calculator
Open-source C/C++ math engine for advanced scientific computing
A powerful arbitrary-precision calculator.
Supports PEDMAS order of computation and Reverse Polish Notation Gener
Simple Java computer algebra calculator
Portable bundle for Windows
Lightweight Qt-based Python console with variable explorer and history
The Fourth Edition of STEMCalc and the biggest one yet!
A calculator to work with historical dates and calendars.
Simple calculator
Basic Scientific Calculator
Interval Calculator for Engineer
DUBCEN IS A FREE & OPEN SOURCE BROWSER BASED CALCULATOR AND CONVERTER
A Calculator to perform logical operations
Reor is a winsome calculator with loads of functions, by Ajay Menon.
Calculate various aspects of the Kontinuum RPG system.
RCL, a simulator for Texas Instrument calculators from the 70's.
HVAC Minimum Pipe Size Calculator
Calculates multiple forces in various angles.
Calculator that takes care of measurement units.
Calculator with fractions
Hand Written Equation Creator