react-jsonschema-form is a popular library for building forms in React applications using JSON Schema. It allows developers to create complex forms with minimal effort by defining the form structure and validation rules in a JSON format. This approach makes it easy to manage form state and validation while ensuring that the forms are dynamic and adaptable. However, there are several alternatives available that also provide powerful form handling capabilities. Here are a few notable options:

• formik is a widely-used library for managing form state in React applications. It simplifies the process of handling form inputs, validation, and submission. Formik provides a flexible API that allows developers to create forms with ease, including support for complex validation and nested fields. If you are looking for a robust solution that integrates well with React's component model and offers extensive customization options, Formik is an excellent choice.
• react-final-form is another form management library that focuses on performance and simplicity. It is built on the principles of Final Form, which emphasizes minimal re-renders and efficient state management. React Final Form allows developers to create forms with a straightforward API while providing powerful features such as field-level validation and dynamic field arrays. If you need a lightweight solution that prioritizes performance, React Final Form is worth considering.
• react-hook-form is a library that leverages React hooks to manage form state and validation. It is designed for performance and simplicity, allowing developers to create forms with minimal boilerplate code. React Hook Form supports uncontrolled components, which can lead to better performance in larger forms. If you prefer a hook-based approach and want to minimize re-renders while maintaining a clean codebase, React Hook Form is a great option.

To explore how these libraries compare, check out the following link: Comparing formik vs react-final-form vs react-hook-form vs react-jsonschema-form.