RKWard aims to provide an easily extensible, easy to use IDE/GUI for the R-project

rkward
Free
Offline
https://rkward.kde.org/

RKWard aims to provide an easily extensible, easy to use IDE/GUI for the R-project. RKWard strives to combine the power of the R-language with the (relative) ease of use of commercial statistical packages. While RKWard is far from finished, it is already useful to R experts looking for an IDE interface to the R language. For R novices, it provides graphical dialogs for a limited but growing number of statistical and graphing features.