Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.

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

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

MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming

Dr. Geo - Dr. Geo, a software to design & manipulate interactive geometric sketches.

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