Jotai is a state management library for React that offers simplicity and robustness. It is based on the concept of atoms, which are independent pieces of state. Jotai also provides utilities to integrate with other state management libraries like Immer, Optics, React Query, XState, Valtio, Zustand, Redux, URQL, and more. The library allows developers to create complex applications while maintaining a clear and manageable state structure.