R is a language and environment for statistical computing and graphics (S-Plus like).
Description
R is a language and environment for statistical computing and graphics.
It is a GNU project which is similar to the S language and environment
which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies)
by John Chambers and colleagues.
R can be considered as a different implementation of S. There are some important
differences, but much code written for S runs unaltered under R.
R provides a wide variety of statistical (linear and nonlinear modelling,
classical statistical tests, time-series analysis, classification, clustering, …)
and graphical techniques, and is highly extensible.