The R Commander is a basic-statistics graphical user interface (GUI) for R, designed to simplify statistical analysis for students. Unlike S-PLUS, R does not include a built-in statistical GUI, but it provides tools for building GUIs, such as the tcltk package. The R Commander aims to provide an easy-to-use, cross-platform GUI that supports statistical functionality required for basic statistics courses, while also making it difficult to perform unreasonable tasks and showing the relationship between GUI choices and R commands. It includes a menu/dialog-box interface with help buttons, script and output windows, and a messages window for errors and warnings. Data sets are R data frames, and the GUI allows for data input from files, packages, or direct entry. The R Commander supports various statistical analyses, including summaries, graphs, and models, and can be extended through programming and configuration files. It is cross-platform, though its performance on non-Windows systems may vary. The GUI is designed to be user-friendly for novices, with features like automatic command echoing and error handling. The R Commander has been used successfully in educational settings and is extensible, though it requires some familiarity with R and Tcl/Tk. Future developments may include additional statistical functionality and improved graphical capabilities.The R Commander is a basic-statistics graphical user interface (GUI) for R, designed to simplify statistical analysis for students. Unlike S-PLUS, R does not include a built-in statistical GUI, but it provides tools for building GUIs, such as the tcltk package. The R Commander aims to provide an easy-to-use, cross-platform GUI that supports statistical functionality required for basic statistics courses, while also making it difficult to perform unreasonable tasks and showing the relationship between GUI choices and R commands. It includes a menu/dialog-box interface with help buttons, script and output windows, and a messages window for errors and warnings. Data sets are R data frames, and the GUI allows for data input from files, packages, or direct entry. The R Commander supports various statistical analyses, including summaries, graphs, and models, and can be extended through programming and configuration files. It is cross-platform, though its performance on non-Windows systems may vary. The GUI is designed to be user-friendly for novices, with features like automatic command echoing and error handling. The R Commander has been used successfully in educational settings and is extensible, though it requires some familiarity with R and Tcl/Tk. Future developments may include additional statistical functionality and improved graphical capabilities.