Jotai

Jotai strips React state management back to the basics: atoms that hold values and update components, nothing more. You create atoms (small pieces of state), use them in components, and React re-renders only what changed. That's it.

Think of atoms like individual useState hooks that any component in your app can read and write to. No providers wrapping your entire app, no boilerplate. You write `const countAtom = atom(0)` and use it anywhere. Derived state is just an atom that reads other atoms.

What makes Jotai different from Zustand (its sibling from the same team): Jotai is bottom-up. You build small atoms and compose them. Zustand is top-down: one store with slices. For apps with lots of independent pieces of state that occasionally depend on each other, Jotai's model clicks faster. Async atoms handle data fetching without extra libraries. Integration with React Suspense works out of the box. TypeScript support is excellent.

The catch: the ecosystem is smaller than Redux or Zustand. If your team already knows Redux, switching saves zero time. And for simple apps, useState plus context is still fine; Jotai shines when you have 20+ pieces of interconnected state.