Giac/Xcas - Free computer algebra system
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
GeoGebra CAS Calculator - Free online algebra calculator from GeoGebra: solve equations, expand and factor expressions, find derivatives and integrals
SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.
Geometry Pad - Geometry Pad is a dynamic geometry application for iPad and Android tablets.
Origin - Origin is your new digital playground. It’s where you go to find the best that EA has to offer.