The R Commander is described as 'A basic-statistics GUI for the R (programming language), based on the tcltk toolkit' and is an app in the Development category. There are 2 alternatives to The R Commander for Linux, Mac, Windows and Xfce. The best alternative is Rattle, which is both free and Open Source.
Rattle is a GUI for data mining using R. All interactions through the graphical user interface are captured as R script. It presents statistical and visual summaries of data, transforms data, builds machine learning models, and scores new datasets.
Deducer is designed to be a free easy to use alternative to proprietary data analysis software such as SPSS, JMP, and Minitab. It has a menu system to do common data manipulation and analysis tasks, and an excel-like spreadsheet in which to view and edit data frames.