Precision Trigonometry: Advanced Calculator for Complex Math
Calc: arbitrary precision C-like arithmetic & calculator
Command-line calculator and libray.
engineering programmable calculator
PeCalc is a polyvalent engineering calculator for S&T students
MACE is a Mathematical program for Algorithms, Calculations, Equations
Easy mathematics in wxWidgets
Calculator for complex numbers
a reverse Polish notation multi-precision pocket calculator software
complex numbers calculator/converter