Similar tools

For interactive collaborative editing / exploration:

• Jupyter, nee IPython
• Apache Zeppelin (incubating)
• Beaker Notebook
• https://www.sharelatex.com/ it does not seem to be open-source, so there is no way to make use of his editor environment
• rpubs
• bl.ocks and blockbuilder
• jsfiddle

For interactive web charts using R (these aren't so exploratory though):

• rCharts
• Shiny
• ggvis - ggplot2 on Vega