Wikimedia PAWS is similar, from what I gather. https://wikitech.wikimedia.org/wiki/PAWS https://wikitech.wikimedia.org/wiki/PAWS I don't think it's a producti

Wikimedia PAWS is similar, from what I gather. https://wikitech.wikimedia.org/wiki/PAWS https://wikitech.wikimedia.org/wiki/PAWS I don't think it's a production service, but I've talked to a couple of people involved and it sounds like it's getting a good response when it's been introduced in educational environments.