Redux / Zustand
State management libraries for React — Redux is the established standard; Zustand is the lightweight modern alternative.
Redux is the long-established global state management library for React applications, known for its strict unidirectional data flow and powerful DevTools for time-travel debugging. Redux Toolkit (RTK) modernized the API significantly. Zustand has emerged as a simpler, lower-boilerplate alternative that handles most use cases with a fraction of the code. Both appear frequently in job listings for React roles.
Typical time to job-readiness: ~3 weeks.