non-opinionated theme-ready component libraries (design system is customizable)
- https://mantine.dev/
- https://www.radix-ui.com/ (aria, design-system, themable, unstyled)
- https://www.bumbag.style/
- https://headlessui.dev/ (styled & class)
- https://nextui.org/
- https://github.com/chakra-ui/awesome-chakra-ui
- https://github.com/Hyperting/hypertheme-editor
- https://choc-ui.com/ (based on chakra-ui)
- https://stitches.dev/ (styled compatible)
- https://tamagui.dev/
- https://daisyui.com/
- https://lofiui.co/
- https://github.com/vechai/vechaiui
- https://tailwind-elements.com/
- https://css-tricks.com/tag/css-in-js/
- https://css-tricks.com/a-thorough-analysis-of-css-in-js/
- https://css-tricks.com/the-differing-perspectives-on-css-in-js/
- Theme Editor https://www.hyperthe.me/ (pricing)
- Design System picker https://adele.uxpin.com/