Engineering Calculator and Unit Converter
Precision Trigonometry: Advanced Calculator for Complex Math
Command-line calculator and libray.
Evaluate math expressions from command line or in interactive session.
Mathematical expression parser and evaluator for .NET
Arithmetic and calculus with decimal numbers of arbitrary precision.
Simple tool for numerical calculation
Programmable Calculator (IP functions, create user functions)
Command-line calculator of basic statistics.
galculator is a scientific calculator in algebraic mode and RPN
An unlimited calculator for Chi Squared
Construction Calculator
Simple and easy application to calculate resistivity
An arithmetic calculator for the most popular numerical systems.
An algebraic, logarithmic, and trigonometric calculator for Windows.