Calcbot for Apple Watch - Calculate, convert, and split tips from your wrist

GeoGebra CAS Calculator - Free online algebra calculator from GeoGebra: solve equations, expand and factor expressions, find derivatives and integrals

SpeQ Mathematics - SpeQ is a small, extensive mathematics program with a simple, intuitive interface.

GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.

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

GeoGebra - GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching.