SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.
Giac/Xcas - Free computer algebra system
LabPlot - LabPlot is a KDE-application for interactive graphing and analysis of scientific data.
GeoGebra CAS Calculator - Free online algebra calculator from GeoGebra: solve equations, expand and factor expressions, find derivatives and integrals
RJS Graph - RJS Graph is an artificial intelligence-based data management platform that allows users or developers to organize the data by manipulating the binaries, scientific, mathematical, and other insights with accurate results.
Geometry Pad - Geometry Pad is a dynamic geometry application for iPad and Android tablets.