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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.
Personally I've been really enjoying Svelte recently, but it's newer so the community support isn't as strong.
I've only scratched the surface of what svelte can do in my personal use case but it's already so fun. I made an internal tool for my company using Svelte, Sveltekit and [Pocketbase](https://pocketbase.io/). It took a week for the three different pieces I built. The front end was definitely what I was concerned about taking the longest but Svelte made it way faster than Vanilla or me learning a beast like React.