NumWorks - The graphing calculator that makes learning math easier.

SpeedCrunch - SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

Rule of 3 Calculator - Apply the mathematical Rule of Three in an easier, faster and more practical way!

Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.

eMathHelp.net - Site is created to help people learn math. Includes algebra, calculus, differential equation calculators and notes with many examples.

HEXelon MAX - HEXelon MAX is a science calculator. It solves math expressions like: Sin(Pi)-Root(-8;3)+3.