Zustand
"German for bear" — minimalist state library, 1.2 KB gzipped, hooks-based API. Created an entire "tiny state libs" wave.
Daishi Kato + Poimandres (Pmndrs) maintain. const useStore = create((set) => ({ count: 0, inc: () => set(s => ({count: s.count+1})) })). No providers, no context. The default choice 2023-2025 for modern React projects. Competitors: Jotai (same author, atomic), Redux Toolkit (more enterprise), Valtio (proxy-based).