Craft.js

Craft.js is a React framework for building extensible drag-and-drop page editors. Rather than shipping a turnkey editor, Craft.js provides the underlying primitives — a node tree, a drag-and-drop engine, and a plugin system — so you can assemble the exact editor your team needs.

Craft.js is MIT-licensed and built in TypeScript. It is headless, ships without a default UI, and gives developers full control over rendering, theming, and the editing experience. The framework is highly extensible: custom drag handles, resizable nodes, custom rules, serializer hooks, and per-component editor controls are all first-class. It works with any React setup and integrates cleanly with Next.js, Remix, and standalone React apps.

Craft.js is a good fit for teams building custom content editors, internal tooling, marketing page builders, or specialized CMS interfaces — anywhere a generic page builder is too rigid and a custom implementation is too expensive. It has a large community, thousands of stars on GitHub, and a permissive license suitable for commercial use.