RCloud: An HTML5 frontend for collaborative data analysis in R

RCloud is an environment for collaboratively creating and sharing data analysis scripts in R. Much like Sage, iPython notebooks and Mathematica, RCloud provides a notebook interface that lets you easily record a session and annotate it with text, equations, and supporting images.

Unlike these other systems, RCloud:

Here's a screenshot:



You might also want to take a look at these RCloud screencasts.