Database

Jotai atomic state for React — primitive/derived/async atoms, Provider-less mode, atomWithStorage, atomWithQuery, and React Suspense integration

Legend-State high-performance observable state for React — fine-grained reactivity, persistence plugins, computed observables, and sync engine

Nanostores tiny framework-agnostic state manager — atoms, computed stores, lifecycle events, and integrations with React, Vue, Svelte, and vanilla JS

Redux Toolkit for scalable React state — createSlice, configureStore, RTK Query, createAsyncThunk, entity adapter, middleware, and TypeScript patterns

TanStack Query for server state — useQuery, useMutation, query invalidation, optimistic updates, infinite queries, prefetching, and SSR hydration

Valtio proxy-based state for React — mutable-style API with automatic tracking, snapshots, derived state, and nested object support

XState for state machines and statecharts in React — actors, guards, actions, services, @xstate/react integration, and the visual editor

Zustand minimal React state management — create store, selectors, middleware (persist, devtools, immer), slices pattern, and async actions