1. CRAN Task Views
2. Basic stack
   1. MASS
   2. Hmisc
   3. plyr
   4. data.table
   5. reshape2
   6. ggplot2
   7. caret
   8. party
   9. tm
3. Integrated platforms
   1. RStudio
      1. RStudio Server
      2. Shiny Server
4. Visualization
   1. lattice
   2. hexbin
      1. Bioconductor
   3. ash
      1. Bioconductor
   4. scagnostics
   5. bigvis
   6. igraph
   7. iplots
   8. rgl
5. Data formats
   1. Flat text
      1. readLines
      2. read.table
      3. read.fwf
      4. sqldf
   2. HDF5
      1. hdf5
   3. SQL
      1. sqldf
      2. RODBC
      3. Rmysql
      4. RJDBC
      5. ROracle
   4. NoSQL
      1. MongoDB
         1. rmongodb
         2. RMongo
      2. CouchDB
         1. R4CouchDB
   5. JSON
      1. RJSONIO
      2. rjson
   6. XML
      1. XML
   7. HBase
      1. rhbase (Revolution)
6. Large & out-of-memory data
   1. ff
   2. bigmemory
   3. biglm
   4. biglars
   5. bigrf
7. Hadoop
   1. RHIPE
   2. rmr
   3. HadoopStreaming
   4. Revolution Analytics
      1. rhbase
      2. rhdfs
8. Glue
   1. Rgraphviz
      1. Graphviz
   2. Rcpp
   3. rJava
   4. rPython
9. As backend
   1. Rserve
      1. Python
         1. pyrserve
      2. Web
   2. Python
      1. rpy2
      2. pyper
   3. Perl
      1. Statistics::useR
   4. Web
      1. FastRWeb
      2. Rserve
      3. Shiny Server
   5. SAS
      1. PROC IML (version 9.22+)
      2. PROC_R macro
10. GPU
    1. gputools
11. in-database analytics
    1. Teradata
       1. TeradataR
    2. Oracle
       1. Advanced Analytics
    3. Netezza
    4. SAP HANA
       1. RHANA
12. Parallel
    1. parallel
    2. Rmpi
    3. foreach
       1. doMC
       2. doSNOW
       3. doMPI
13. Efficiency
    1. C API
    2. Rcpp
14. Packages
    1. CRAN
       1. 4501 packages
       2. Growth