DataJoy is our second product (we're also the team behind ShareLaTeX (www.sharelatex.com)). We realised that a lot of the technical problems we had solved to make ShareLaTeX possible could also apply to more general environments, like Python and R which are also very common in academia. We're hoping to make these tools easier for scientists to use, both when getting started and when collaborating on their data analysis, data clean up, statistics, etc. Let us know what you think!