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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.
denisidoro / navi – An interactive cheatsheet tool for the command-line and application launchers
sindresorhus / terminal-image-cli – Display images in the terminal
If you haven't played around with custom elements, you should have a look. They're like jQuery plugins without jQuery. To implement web performance metrics in my rebuilt site, I wrote a quick web-vitals element. Load it from unpgk.com, place it in your pages and start showing web performance metrics.
tldr-pages / tldr – Collaborative cheatsheets for console commands