| KernSmooth | Functions for kernel smoothing for Wand & Jones (1995) | 
| MASS | Main Package of Venables and Ripley's MASS | 
| base | The R Base Package | 
| boot | Bootstrap R (S-Plus) Functions (Canty) | 
| class | Functions for Classification | 
| cluster | Functions for clustering (by Rousseeuw et al.) | 
| ctest | Defunct Package for Classical Tests | 
| eda | Defunct Package for Exploratory Data Analysis | 
| foreign | Read data stored by Minitab, S, SAS, SPSS, Stata, ... | 
| graphics | The R Graphics Package | 
| grid | The Grid Graphics Package | 
| lattice | Lattice Graphics | 
| lqs | Resistant Regression and Covariance Estimation | 
| methods | Formal Methods and Classes | 
| mgcv | Multiple smoothing parameter estimation and GAMs by GCV | 
| mle | Defunct package for maximum likelihood estimation | 
| modreg | Defunct Package for Modern Regression: Smoothing and Local Methods | 
| mva | Defunct Package for Classical Multivariate Analysis | 
| nlme | Linear and nonlinear mixed effects models | 
| nls | Defunct Package for Nonlinear Regression | 
| nnet | Feed-forward Neural Networks and Multinomial Log-Linear Models | 
| rpart | Recursive Partitioning | 
| spatial | Functions for Kriging and Point Pattern Analysis | 
| splines | Regression Spline Functions and Classes | 
| stats | The R Stats Package | 
| stats4 | Statistical functions using S4 classes | 
| stepfun | Defunct Package for Step Functions, incl. Empirical Distributions | 
| survival | Survival analysis, including penalised likelihood. | 
| tcltk | Tcl/Tk Interface | 
| tools | Tools for Package Development | 
| ts | Defunct Package of Time Series Functions | 
| utils | The R Utils Package |