Jodit

JavaScript UI library and free open source project constantly managed by NHN. Chart makes your data pop. Its numerous charts like Line, Bar, Pie, and more are easy to use, and you can export your data to excel or even as images. Editor allows you to interact with their Markdown documents through both text and WYSIWYG. With syntax highlighting, scroll-sync, live preview, charts, and much more diverse features and UI, it takes your word processing to the next level. Grid is a powerful grid library with data editing, filtering, sorting, pagination features, and more. Furthermore, you can customize the editor and the renderer to your desired format and visualize your data however you like. Calendar provides monthly, weekly, multi-weekly, daily views, and more, as well as a basic pop-up UI you can use to add/edit/delete your schedules. You can manage your schedule simply by dragging the schedules around. Managing your calendar has never been easier.

​BlockNote is an open source, block-based rich text editor for React that offers a polished, Notion-style user experience with minimal setup. It comes with built-in UI components like menus and toolbars, which are fully customizable. It supports drag-and-drop functionality, allowing users to organize content into blocks that can be nested or rearranged. Developers can extend the editor with custom blocks, schemas, and plugins, benefiting from first-class TypeScript support for type safety and autocompletion. BlockNote enables real-time collaboration using Yjs, with support for providers like Liveblocks and PartyKit, allowing multiple users to edit documents simultaneously. It also supports theming, markdown, and HTML conversion, and can be used with vanilla JavaScript for non-React projects. Built on top of ProseMirror and TipTap, BlockNote simplifies the process of adding a rich text editor to applications, eliminating the need to build interface elements from scratch.