11 Comparison with SAS, SPSS, and Stata.It has a command line interface, but multiple third-party graphical user interfaces are available, such as RStudio, an integrated development environment and Jupyter, a notebook interface. Precompiled executables are provided for various operating systems. It is written primarily in C, Fortran, and R itself (thus it is partially self-hosting) and is freely available under the GNU General Public License.
The official R software environment is a GNU package. Polls, data mining surveys, and studies of scholarly literature databases show substantial increases in R's popularity since August 2021, R ranks 14th in the TIOBE index, a measure of popularity of programming languages. It is widely used among statisticians and data miners for developing statistical software and data analysis. R is a programming language and free software environment for statistical computing and graphics supported by the R Core Team and the R Foundation for Statistical Computing.
