I know that the team behind Happytables, Human Made (http://hmn.md/), have been working on it for several years. This is the 3rd iteration of it and it's pretty awesome. I also believe it's actually powered by WordPress, which is quite cool in itself.
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@bryceadams Thank you Bryce, appreciate the kind comments! Correct, it's built on top of WordPress, uses a REST API + Knockout.js and various front-end editing tools to tie it all together :)
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