craft.js VS blocks

I've been building one with https://craft.js.org/ , tailwind, nextjs, and vercel, a few months into it I've got a decent component library, custom domains, subdomains, static pages, accounts, multiple pages, cdn and a bit more. The basics are easy to get going. Making it easy to understand/use, responsive, and all that, is a bit more complex.

As for the second part of your question, regarding UI. Reka is purely the state management system, so it is designed to help with storing/editing user content and computing an output for that content so you can render that on the browser; it’s not really responsible for the UI part. For building UI’s for your page editor - there’s Craft.js which is another framework that I built for creating page editors. Craft comes with an event system that lets you know which elements is being selected/hovered/dragged and a drag and drop system that lets you move elements around on the screen along with other things that helps you build your own page editor UI. Craft is actually the parent project of Reka. Reka was built to replace Craft’s internal state management system so that you could build entire UI components in Craft in the future. If you’re interested, you could check out the motivation and relationship between Craft and Reka here. As for the demo shown in the video, all the UI interactions (including some that you have mentioned like showing the borders of selected elements) are fairly straightforward, and they’re simply just interacting/mutating the AST state of Reka. Feel free to take a look at the code for the demo.

https://craft.js.org/ - This is probably more like what you're looking for. It's in heavy development still and does lack some features but you can use it with reactive components.

We’ve been looking into craftjs for this use case since it seems to be more targeted at letting you build on top of it. https://craft.js.org/

Does anyone have some recommendations? https://craft.js.org/ something like this, but not with HTML.

i think that's how all no-code web editors like carrd, webflow, squarespace work i think (see https://github.com/prevwong/craft.js & https://github.com/artf/grapesjs)

If you're just talking about a WYSIWYG website page editor, check out https://github.com/prevwong/craft.js

I'd like to build a minimal dnd page builder in Javascript. Can anyone recommend an actively maintained WYSIWYG page builder project?

https://github.com/blocks/blocks looks good but it's fairly out-dated. Before contributing to blocks I wonder if there's something more up to date?