Console Calculator - Console Calculator is a powerful calculator with a simple console interface.
GeoGebra CAS Calculator - Free online algebra calculator from GeoGebra: solve equations, expand and factor expressions, find derivatives and integrals
Calculator by Xlythe - Calculator is a simple 4 function calculator.
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
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 .
Dr. Geo - Dr. Geo, a software to design & manipulate interactive geometric sketches.