Awesome text editing 
A curated collection of text editing libraries, services, and resources for the web.
Rich-text editors using contenteditable
- Slate - Rich text editor built on top of React and Immutable
- TipTap - Rich text editor for Vue.js
- Trix - Basecamp's rich text editor
- CKEditor - Started back in 2003. Has both iframe and inline style rich-text editing
- Squire - HTML5 rich text editor
- ProseMirror - From the maker of CodeMirror
- Scribe - From the Guardian team
- Quill - Quill is a free, open source WYSIWYG editor built for the modern web
- Summernote - Bootstrap dependent rich-text editor
- wysihtml - Made by Voog
- Etherpad - Open Source online editor providing collaborative editing in really real-time
- TinyMCE - Used by much of the wordpress and drupal community
- Medium.js - Warning: Not actually used by Medium
- Textbox.IO - From the makers of TinyMCE
- Froala - A simple to use rich text editor, with mobile support, lots of examples, high performance and inline editing
- Redactor - Advanced, clean and smooth, Redactor Rich Text Editor offers an excellent immersive user experience
- Ritzy - Collaborative web-based rich text editor
- Aloha Editor - Open Source browser based html5 enabled rich text editor
- WYMeditor - Open Source XHTML editor focusing on semantic markup
- Dijit Editor - a Dojo-based rich text editor component
- YUI Rich Text Editor - a Yahoo! rich text editor component
- KindEditor - Open Source HTML editor
- Hallo - Simple rich text editor (contentEditable) for jQuery UI
- markitup - universal markup jQuery editor
- openwysiwyg - Free cross-browser WYSIWYG editor
- tejQuery - Lightweight (19.5 KB) and very useful HTML editor
- Trumbowyg - light, translatable and customisable jQuery plugin
- NicEdit - Abandoned in 2012
- jWYSIWYG - WYSIWYG jQuery Plugin
- Alloy - a modern WYSIWYG editor built on top of CKEDITOR
- Draft.js - a rich text editor framework for React
- MediumEditor - A clone of medium.com inline editor toolbar. Uses contenteditable API to implement a rich text solution.
Code editors
- Yace - 1KB code editor for browser with plugins
- CodeJar - CodeJar is a micro code editor for the browser
- CodeMirror - CodeMirror is a versatile text editor implemented in JavaScript for the browser
- Ace - Ace is an embeddable code editor written in JavaScript
- EditArea
- Behave.js - lightweight library for adding IDE style behaviors to plain text areas
Markdown editors
- markdown-js - A Markdown parser for javascript
- pagedown - PageDown is the JavaScript Markdown previewer used on Stack Overflow and the rest of the Stack Exchange network
Heuristic for contenteditable rich-text editors
Editor should:
- Be stable
- Be open source
- Handle soft breaks
- Be able to manipulate styles on block level elements
- Be able to manipulate styles on inline level elements
- Be able to manipulate classes on block level elements
- Be able to manipulate classes on inline level elements
- Be able to alter custom attributes on block level elements
- Be able to alter custom attributes on inline level elements
- Cache the selection
- Have iframing capabilities as well as inline mode capability
- Change the tag type of nodes
- Clear the format
- Have a concise api
- Support various module loaders
- AMD & Common.js
- Should have an organization backing the service and have a potential paid support plan
- Should copy & paste from Microsoft word
