
R is a language and environment for statistical computing and graphics. It shares similarities with the S system, which was developed at Bell Laboratories by John Chambers. More information on R can be found on the web site of the R – project.
Apart from being freely available under the GNU public license the R software is a powerful tool when it comes to data analysis and graphics. A wide range of add-on packages are available to perform a great diversity of statistical analysis and graphical tasks (visit the web page of the Comprehensive R Network for more information).