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 .

LabPlot - LabPlot is a KDE-application for interactive graphing and analysis of scientific data.

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

SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.

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.

DataMelt - DataMelt (DMelt), a free mathematics and data-analysis software for scientists, engineers and students.