kdiff3
Beyond Compare
WinMerge
Meld
Araxis Merge
DiffMerge
P4Merge
Devart Code Compare
Graph
GnuPlot
GeoGebra
Matplotlib
SciDaVis
OriginPro
Grapher
Delineate Graphs
kdiff3Beyond Compare - Beyond Compare allows you to compare files and folders.
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
GeoGebra - GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
Matplotlib - matplotlib is a python 2D plotting library which produces publication quality figures in a variety...