Ask HN: What is your favorite UI design system?

Shopify Polaris is one I consistently reference: https://polaris.shopify.com/

It's super comprehensive overall, and I particularly like the documentation for the components. For example, even for a basic Checkbox (https://polaris.shopify.com/components/forms/checkbox), they provide sample code, accessibility guidelines, dos and don'ts, and related components. They have clearly put thought into how the system should feel overall; design systems are not just about the CSS of the UI pieces.

It's also cool how they display prop types; if it's a more complex type, then you can click on the prop for details, and click even deeper if needed.

Tailwind CSS [1] and Tailwind UI [2].

Tailwind CSS makes it super easy to style any component and completely side-steps the issue of well-structured (and inflexible) CSS systems.

Tailwind UI fills in the "bootstrap components" gap with a bunch of premade templates, which are very easy to alter for your own, highly-custom use cases.

The UI kit is super expensive though. I'd need to pay $450AUD for the complete set of application UI + marketing UI templates ($370 if bought together). For an individual, it's borderline obscene, but the pricing makes sense for teams.

This setup is super useful. I really enjoy it, though it was a struggle to justify as a student.

[1] https://tailwindcss.com/

[2] https://tailwindui.com/

Elastic UI Framework is really well done https://elastic.github.io/eui/#/

I think I'm going with Winforms, and a close second is Javas Swing.. But I don't like writing software in Java or for windows only, so, QT5 has to be my fav.

Still like to use Bootstrap a lot. They also have an addition with Vue Bootstrap which is made for Vue.

The one specifically designed and built for the project at hand.