What are the best React form builder libraries?

When looking for React form builders, libraries fall into two distinct categories: low-level programmatic builders (state & validation engines used by developers) and schema-driven/visual builders (generate forms dynamically from data or drag-and-drop interfaces). The top React form builder libraries are organized below by use case:

1. Code-First State & Validation Libraries These are best if you want full control over your UI/markup and need a robust engine to handle complex states, validation, and performance. React Hook Form: The reigning champion for modern React apps. It leverages uncontrolled inputs via React refs to minimize unnecessary re-renders, resulting in elite performance. It pairs beautifully with schema validation tools like Zod or Yup. TanStack Form: A rapidly rising, headless, framework-agnostic library. Its claim to fame is first-class, strict TypeScript type safety where form shapes are deeply inferred, making it excellent for massive, complex enterprise applications. Formik: The long-standing, battle-tested legacy standard. While heavier on re-renders than React Hook Form because it uses a controlled state model, it remains highly dependable for teams maintaining existing codebases or heavily integrated with Yup validation. Conform: The ideal choice if you are using modern SSR frameworks like Next.js (App Router) or Remix. It focuses on progressive enhancement, meaning your forms work seamlessly with native HTML and Server Actions even before JavaScript hydrates on the client.
2. Schema-Driven UI Builders These libraries accept a configuration object (like JSON Schema) and dynamically render a fully functioning form, removing the need to manually write JSX for fields. React JSON Schema Form (RJSF): A massive open-source project that converts a standard JSON Schema into a web form. It comes with built-in theme support for major UI kits like Material UI, Bootstrap, and Ant Design. Uniforms: A highly customizable, schema-to-form generation toolkit. Unlike RJSF, Uniforms allows you to easily swap out your schema backend (supporting GraphQL schemas, Zod, Bridge, or JSON Schema) and gives you clean, modular primitives to style.
3. Drag-and-Drop & Platform Builders These tools give you or your non-technical users a visual interface to build forms, exporting the layout into JSON metadata that React renders. SurveyJS: A robust, platform-level form infrastructure tool. It provides a full dynamic JSON schema-driven workflow alongside a separate visual "Survey Creator" component. It is the most feature-complete tool for dynamic, runtime-editable forms. Form.io: A comprehensive open-source form management and data rendering platform. You use a drag-and-drop interface to build complex forms, and the react-formio library effortlessly renders them while automatically hooking them up to an auto-generated REST API backend. Formbricks: A powerful, modern open-source privacy-focused alternative to Typeform. While it operates as a full suite, its modular React SDK makes it incredibly easy to build and embed highly customized multi-step forms and micro-surveys natively into React apps. Which of these directions fits your project best? Are you looking to write code manually with a tool like React Hook Form, or do you need a dynamic JSON/visual builder?