Redux is an open-source JavaScript library designed for managing application state. It helps developers write applications that behave consistently across different environments (client, server, and native) and are easy to test. By centralizing an application's state and logic, Redux enables powerful features such as undo/redo functionality, state persistence, and more.
The library is highly debuggable, offering tools like Redux DevTools that allow users to trace state changes, utilize "time-travel debugging," and send detailed error reports. Redux is also flexible, compatible with any UI layer, and supported by a large ecosystem of addons. The Redux team also provides other libraries like React-Redux for official React bindings and Redux Toolkit for efficient Redux development.