Rdatasets is a collection of 1072 datasets that were originally distributed alongside the statistical software environment R and some of its add-on packages. The goal is to make these data more broadly accessible for teaching and statistical software development.
The list of available datasets (csv and docs) is available here:
On the github repository you will also find:
Rdatasets.R:Rscript to download CSV copies and HTML docs for all datasets distributed inBase Rand a list of R packages.