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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
One of the most beautiful visions about Web3 is that content creators will be establishing direct distribution channels with their fans, profiting not from advertisers but from the endorsement of users. Plugins, naturally suited with flexibility and modularity, like crowdfund, edition, and splits are supposed to be closer to this vision and also the Web3 composability ideal. plugins are And this is one of the few open-source parts of the Mirror community. And now these are all gone.
This dev did come up with a blockchain publish alternative named Xlog later on, which seems free and open source. Github link.