Nucleux is atomic state management for React that eliminates provider wrapping and boilerplate code. Components subscribe directly to specific atoms and only re-render when their data actually changes, making apps faster and code simpler. It provides three hooks covering every use case: access store methods, subscribe to specific atoms, or get everything at once. Built with TypeScript, works with React Native, weighs under 3KB, and is framework-agnostic so you can use it outside React entirely. No configuration files, no reducers, just state management that works the way you'd expect it to.