uivsmantine
Copy-paste primitives vs a full batteries-included library. Pick shadcn for Tailwind-first projects you want to fully own; pick Mantine when you need 100+ components ready to use with hooks and forms baked in.
ui
github.com/shadcn-ui/uiThe default for Next.js builders in 2026. Not a dependency — you copy components into your codebase and own them forever. Built on Radix primitives so accessibility is solid out of the box. The catch: when something breaks or needs updating, you maintain it yourself. For most apps that is the right trade. For huge teams it can create drift across projects. Survey data from 2026 puts it as the third-most-loved tool in the React ecosystem.
Full review →mantine
github.com/mantinedev/mantine100+ components and 50+ hooks. ~26k stars. Particularly strong on form handling and date pickers. Less hyped than shadcn but mature, well-documented, and just works. Good fit for SaaS dashboards.
Full review →Which should you pick?
Pick ui if…
You are on Next.js or Vite + React with Tailwind, you want full control over component code, and you do not mind some manual maintenance.
Skip ui if…
You need Material Design specifically, you want automatic library upgrades, or you are not on Tailwind.
Pick mantine if…
You want a comprehensive React component library with excellent forms and hooks out of the box.
Skip mantine if…
You want copy-paste ownership of component code — Mantine is a traditional dependency.
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