shadcn/ui
ui.shadcn.comUI & Design
You don't npm install it — you copy the code into your repo and own it, which is why it became the default start for new React UIs.
Other products from UI & Design
Unstyled, accessible component primitives quietly powering shadcn/ui and a good chunk of the polished apps you use every day.
The old reliable of React component libraries — batteries-included Material Design components for shipping a finished-looking app fast.
The go-to for admin panels and internal dashboards — dense tables and forms out of the box, at the cost of looking like one.
A newer, hooks-first component library with better defaults and fewer footguns than most — an indie-hacker favorite for solo builds.