RStudio IDE is a powerful and productive user interface for R. It’s free and open source, and works great on Windows, Mac, and Linux.
The developers and expert trainers are the authors of several popular R packages, including ggplot2, plyr, lubridate, and others.
More at http://www.rstudio.com/
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RStudio v0.99.292 Preview — Release Notes
A preview release of RStudio v0.99.292 is now available for testing and feedback. Highlights include:
See v0.99.292 Release Notes for full details on all of the changes in this release.
More at http://www.rstudio.com/products/rstudio/download/preview/