am-editor vs ProseMirror

am-editor is a rich text editor for developers building web editing experiences. It supports collaborative editing and can be extended with plugins in React, Vue, and other front-end libraries. The project includes dozens of ready-to-use plugins and allows custom marks, inline elements, blocks, and cards. Listed content features include tables, files, mathematical formulas, images, audio, video, and embedded multimedia. Markdown syntax is supported, including by the code block plugin by default. The project lists internationalization and compatibility with most recent mobile browsers. Collaboration uses Yjs and WebSocket, with a Node.js server component that stores data in MongoDB or LevelDB. Examples or components are provided for React, Vue 2, and Vue 3; the engine can be installed as @aomao/engine with npm or yarn. am-editor is free and open source under the MIT License; its listed plan is free, subject to license conditions including attribution and a license notice. The license disclaims warranties and liability.

ProseMirror is a toolkit for developers building rich-text editors on the web. It supports structured documents through a WYSIWYG-style interface while letting applications define document shape and content. Instead of treating a document as an HTML blob, it gives application code control over a custom data structure. Schemas and plugins provide ways to customize that structure and extend editor behavior. Four core modules handle the document model, editor state, view, and transformations; additional modules offer commands, key bindings, undo history, input macros, collaboration, and a basic schema. Multiple people can edit together in real time. Examples cover Markdown, image uploads, custom schemas, menus, code editors, footnotes, and track changes. ProseMirror is free, open source, and legally usable commercially; it can be self-hosted and is installed through npm. It works in recent Firefox, Chrome, Safari, and Edge versions, as well as Internet Explorer 11. It is a modular toolkit rather than a ready-made editor component, and implementation generally involves a bundler.