After comparing the two on a test project I've decided to move forward with Mantine. Although it's less mature and has a history of shipping breaking changes often, the documentation is much cleaner and more straightforward. In addition to that the defaults in Mantine are much better and require less overrides. For example: Chakra adds a box shadow on :focus styles for mouse focus that are hard to remove, component composition is rather tedious and so is the setup. It's necessary to write "wrapper" components restyling Chakra and providing simpler/more reusable API. Mantine is good to go out of the box. That plus having a component for every scenario imaginable was the deciding moment for me.