RStudio offers open source and enterprise ready professional software for R.
Our flagship product is an Integrated Development Environment (IDE) which makes it easy for analysts, scientists, data scientists and quants to perform their analyses. We also offer a web application framework called Shiny that allows you to take those analyses and share them with your team/organization by creating interactive web applications.
The RStudio team also contributes code to many R packages and projects. R Markdown, ggvis, dplyr, knitr, and packrat are R packages from RStudio that enhance the value, reproducibility, and appearance of the work of data scientists.