Cantor is a free software mathematics application for scientific statistics and analysis.

Cantor is a graphical user interface that delegates its mathematical operations to one of several backends.

It can make use of Julia, KAlgebra, Lua, Maxima, Octave, Python, Qalculate!, R, SageMath, and Scilab.

[4][5] Cantor provides a consistent interface to these backends; its project page lists the following features:[4] Cantor was the first KDE project to implement upload to the GetHotNewStuff addon service, which is used to download or upload example worksheets.

It provided impetus for improvement of this feature for KDE SC 4.4.