1. rpubchem - This project provides an interface to Pubchem compound and assay datasets, to allow direct access to the information without going through the XML files or the PubChem web interface
2. brew - brew implements a templating framework for mixing text and R code for report generation. brew template syntax is similar to PHP, Ruby's erb module, Java Server Pages, and Python's psp module.
5. Web Maps - A package for creating 'slippy web maps' from spatial data. Easily create HTML pages that show your points, lines, and polygons on world map data.