Just a few scripts for pocket calculators.
A powerful arbitrary-precision calculator.
An HP RPN calculator with interval output
Open-source C/C++ math engine for advanced scientific computing
Arbitrary-precision CRC calculator and algorithm finder
Calc: arbitrary precision C-like arithmetic & calculator
Multiprecision calculator
Python Calculator on Number Theory, three-birds-one learning material
Evaluate math expressions from command line or in interactive session.
Command-line calculator and libray.
an interactive "rolling paper" calculator
Supports PEDMAS order of computation and Reverse Polish Notation Gener
Programmable graphical scientific calculator
A scientific calculator written in Python
Simple Java computer algebra calculator
PeCalc is a polyvalent engineering calculator for S&T students
A simple Clifford algebra calculator
Simple RPN desktop calculator, implemented with wxWidgets and Lua.
A calculator for solving problems using Constraint Logic Programming.
Lightweight Qt-based Python console with variable explorer and history
Numerical models for chemical and process engineering
Simply percent calculator