The current version of R is R 2.1.1 (2005-06-20). R is a statistical package similar to S-Plus, but also provides some compatibility with Matlab (if package 'matlab' is installed). The current list of packages can be found under /usr/lib/R/library:
acepack cluster fBasics Matrix randomForest strucchange akima coda fCalendar mcgibbsit RColorBrewer survey base ctv foreign mcmc R.css survival bayesm DAAG gam MCMCpack reldist systemfit bayesmix datasets geoR methods rgl tcltk bayesSurv deal geoRglm mgcv rpart tframe baymvb Design graphics micEcon sandwich tools betareg dse1 grDevices mlbench scatterplot3d tripack bim dse2 grid mlmRev segmented tseries bivpois dyn Hmisc MNP sem urca BMA dynamicGraph ineq mvtnorm setRNG uroot boa dynlm its nlme sna utils boot e1071 KernSmooth nnet sp vabayelMix bqtl EbayesThresh lattice oz SparseM xtable BRugs Ecdat leaps pscl spatial zicounts car ensembleBMA lme4 pwt splines zoo chron evdbayes lmtest quadprog stats class exactLoglinTest MASS quantreg stats4