ProseMirror
Rich content editors should, ideally, produce clean, semantically meaningful documents while still being easy for users to understand. ProseMirror tries to bridge the gap between editing explicit, unambiguous content like Markdown or XML, and classical WYSIWYG editors. It does this by implementing a WYSIWYG-style editing interface for documents more constrained and structured than plain HTML. You can customize the shape and structure of the documents your editor creates, and tailor them to your application's needs. ProseMirror has built-in, ground-up, rock solid support for collaborative editing, where multiple people work on the same document in real time. Document schemas allow editing documents with a custom structure without writing your own editor from scratch. A modular architecture makes sure you only load the code you need, and can replace parts of the system as needed. A plugin system allows you to easily enable additional functionality.
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Textbox.io
Textbox.io's powerful editing tools and simple user interface let you create great looking HTML anywhere: on the desktop and on mobile. This demo shows the Textbox.io editor in its standard configuration, with its core HTML editing capabilities enabled. These include text formatting, tables, hyperlinks, and lists. Textbox.io is the first WYSIWYG HTML editor designed for desktop and mobile devices. Its revolutionary app-like mobile UI delivers an optimized UI for tablet and handset users. Easily add and upload images using the device camera or gallery, use text-to-speech to enter content and enjoy effortless rich text editing from anywhere. The best editor available, tightly integrated with IBM products. Built-in image handling & storage. File drag & drop, spell check & autocorrect, clean copy-paste from Microsoft Word, and cross-browser support. Create content more effectively in blogs, wikis, profiles and more.
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Squire
Squire is an HTML5 rich text editor, which provides powerful cross-browser normalisation, whilst being supremely lightweight and flexible. It is built for the present and the future, and as such does not support truly ancient browsers. It should work fine back to around Opera 10, Firefox 3.5, Safari 4, Chrome 9 and IE8. Unlike other HTML5 rich text editors, Squire was written as a component for writing documents (emails, essays, etc.), not doing wysiwyg websites. If you are looking for support for inserting form controls or flash components or the like, you'll need to look elsewhere. However for many purposes, Squire may be just what you need, providing the power without the bloat.
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Editor.js
Next generation block styled editor. Meet the new editor, on our webpage you can see it in action. It is a block-styled editor, it returns clean data output in JSON, and it is designed to be extendable and pluggable with a simple API. Workspace in classic editors is made of a single contenteditable element, used to create different HTML markups. Editor.js workspace consists of separate Blocks: paragraphs, headings, images, lists, quotes, etc. Each of them is an independent contenteditable element (or more complex structure) provided by Plugin and united by Editor's Core. There are dozens of ready-to-use Blocks and the simple API for creation any Block you need. For example, you can implement Blocks for Tweets, Instagram posts, surveys and polls, CTA-buttons and even games. Classic WYSIWYG-editors produce raw HTML-markup with both content data and content appearance. On the contrary, Editor.js outputs JSON object with data of each Block.
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