(Not unrelated: answer from Andrei Herasimchuk at https://www.quora.com/Why-does-Adobe-Photoshop-differentiate...)
Also: I can't work out which image is which. Taking the first image as an example: we've got MATERIAL-STYLE on the left, and LIFTKIT on the right. But what's the left? Does this mean that when you drag the line to the right, revealing the left image, you're looking at MATERIAL-STYLE? Or does this mean you see MATERIAL-STYLE when you drag the line to the left?
(This might seem like pointless quibbling, but this thing bills itself as the The UI Framework for Perfectionists.)
Suggestion to devs: put the label “material-style” in the lower left of its image and “liftkit” in the lower right of its image, and cover them appropriately as the slider moves, and then it'll be clear which framework the current image (or portion of it) belongs to.
(And I'm clearly not the only one that feels this aspect of the site would benefit from another pass...)
I wouldn’t trust a framework that requires me to involve myself with JavaScript, nextJS, and React, also… but I am generally of the opinion that a framework pitching itself as a UI kit, must pretty much not be a plugin for a web browser…
That said, it still looks good.
I had to dig through the docs and get to the installation instructions just to find out that it's React only.
It looks great, but I'm always confused why design system folks wouldn't base everything off web components, which work with almost any framework.