BlockNote is a versatile, open-source rich text editor designed for React that delivers a refined, Notion-like user experience with easy setup. Featuring customizable built-in UI components such as menus and toolbars, it enhances user interaction. With its drag-and-drop capability, users can seamlessly organize content into blocks that can be nested or rearranged according to their preferences. Developers have the flexibility to expand the editor's functionality through custom blocks, schemas, and plugins, all while enjoying robust TypeScript support for improved type safety and autocompletion. BlockNote also facilitates real-time collaboration via Yjs and is compatible with providers like Liveblocks and PartyKit, enabling several users to edit documents at once. Additionally, it includes features for theming, markdown, and HTML conversion, making it adaptable for use in vanilla JavaScript projects beyond React. By leveraging the frameworks of ProseMirror and TipTap, BlockNote significantly streamlines the integration of a rich text editor into applications, thereby removing the complexity of creating interface elements from the ground up. This adaptability makes it an essential tool for developers looking to enhance their applications with rich text editing capabilities.