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 .

DPlot - DPlot graphing software lets scientists and engineers graph, plot, analyze, and manipulate data.

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

Portable Python - Minimum bare bones portable python distribution with PyScripter as development environment.

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.

WinPython - The easiest way to run Python, Spyder with SciPy and friends out of the box on any Windows PC...