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 .

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

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

Grapher - Put Grapher’s powerful graphing and data analysis features to the test and better understand your data. Learn about features and download a free trial.

Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.