MobX has been around for longer and has gained significant popularity in the React community. It has a large and active user base, and is commonly used in production applications. Zustand is a relatively newer library, but it has also gained popularity due to its simplicity and lightweight nature.
Size and Performance
Zustand is a smaller library compared to MobX, which makes it lightweight and more performant. MobX, on the other hand, has a larger codebase and provides more advanced features and optimizations.
API and Developer Experience
MobX follows the observable state pattern and provides a rich set of features for managing state in React applications. It provides observable objects, computed values, and reactions among other powerful concepts. Zustand takes a minimalist approach and provides a simple hook-based API that resembles the React Hooks API. It offers a more straightforward and intuitive API for managing state in smaller applications.
Integration with React
Both MobX and Zustand work well with React and can be seamlessly integrated into React projects. MobX has a long history of being used in React applications and has comprehensive React-specific bindings. Zustand, being a simpler library, requires less setup and configuration for integrating with React projects.
MobX has good support for TypeScript and provides type definitions out of the box, making it easy to work with typed state. Zustand also has TypeScript support, but it requires additional configuration or usage of TypeScript-specific libraries like `zustand/middleware` for better type safety.
Community and Ecosystem
MobX has a well-established and active community with many resources, tutorials, and community-driven packages. It has been widely adopted and is considered a mature solution. Zustand, being a newer library, has a smaller but growing community. However, it has gained popularity due to its simplicity and ease of use.