React Hook Form is a library for building forms in React using hooks. It allows developers to build forms with less code and the data validation is handled in a performant way. The main benefits of using React Hook Form are:

1. Lightweight: It is a lightweight and fast library, which makes it an ideal choice for building forms.

2. Easy to use: React Hook Form is easy to use, and developers can quickly build forms without having to deal with complex form management issues.

3. Customizable: The library is customizable, and developers can use their own components and styles to build forms.

4. Validation: React Hook Form provides powerful validation support, and developers can easily define validation rules for their forms.

Overall, React Hook Form is a great library for building forms in React and can help developers to save time and write cleaner and more efficient code.