@ngxs/store is a state management library for Angular applications. It provides a simple and intuitive API to manage application state in a reactive manner, leveraging Angular's powerful features. NGXS is designed to be easy to use while still being powerful enough to handle complex state management scenarios. It promotes a clear separation of concerns, making it easier for developers to maintain and scale their applications. While NGXS offers a robust solution for state management in Angular, there are several alternatives worth considering:

• @ngrx/store is another state management library specifically designed for Angular applications. It is built on top of the Redux pattern and provides a more structured way to manage state in a reactive manner. NGXS and NgRx share some similarities, but NgRx is more opinionated and offers a more extensive set of tools, including effects and selectors. If your application requires a more comprehensive state management solution with a focus on immutability and a unidirectional data flow, NgRx might be the better choice.
• mobx is a state management library that focuses on simplicity and reactivity. Unlike NGXS and NgRx, which are more structured and follow the Redux pattern, MobX allows developers to manage state in a more flexible and less formal way. It uses observable data structures and reactions to automatically update the UI when the state changes. If you prefer a more straightforward and less boilerplate-heavy approach to state management, MobX could be an excellent alternative.
• redux is a widely used state management library for JavaScript applications, primarily known for its use in React applications. Redux follows the principles of a unidirectional data flow and immutability, making it a powerful choice for managing complex application states. While Redux is not specific to Angular, it can still be used in Angular applications with the help of additional libraries like ngrx/store. If you are already familiar with Redux and its ecosystem, you might find it beneficial to use Redux in your Angular projects as well.

To explore how these libraries compare, check out the comparison: Comparing @ngrx/store vs @ngxs/store vs mobx vs redux.