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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.
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pages-gem
A simple Ruby Gem to bootstrap dependencies for setting up and maintaining a local Jekyll environment in sync with GitHub Pages
As the other poster mentioned below, the GitHub.io link is on the official Stellar Upgrade GitHub page. I was just trying to be helpful, not a scammer. https://github.com/stellar/stellar-upgrade
You could try upgrading your account using this tool from Stellar? https://stellar.github.io/stellar-upgrade-web/
Uh... thanks - GitHub.io is also owned by GitHub.com, and is used for hosting sites associated with repositories - see pages.github.com if you want to learn more about it.