It's like lively-kernel[1] with a layer of Scratch on top -- except it doesn't use WebDAV for storage, and you can't self-host the whole stack.

Still, very nice.

(Now I wonder if there's a service that allows you to list intersection of contributer to github projects... hmm.. there's an api, isn't there:)

    npm install -g json
    cons=(https://api.github.com/repos/{LivelyKernel/LivelyKernel,Microsoft/TouchDevelop}/contributors)
    comm -12 <(curl -s ${cons[0]}|json -a login|sort)\
             <(curl -s ${cons[1]}|json -a login|sort)

    #ed:spoiler alert: no overlap

[1] https://github.com/LivelyKernel/LivelyKernel