Aloha - The HTML5 Editor
Aloha Editor is an easy to use WYSIWYG HTML editor, featuring fast editing, floating menu, and support for HTML5 ContentEditable. It is designed to be the easiest to use, the fastest in editing and the best in its functions. The floating menu offers you the right options matching your editing context. The menu floats to the paragraph, table or content element you are editing.
Aloha Editor is ready to use when your website is loaded. Even if you need 20 or 100 input areas, Aloha Editor is loaded only once. Aloha Editor allows you to edit content you would never have thought you can. You can edit content directly in content accordions, sliders, tickers, captions or descriptions of images in slideshows. It produces clean xHTML5 code once integrated into your application.
Requirements: -
Demo: http://aloha-editor.com/
License: AGPL 3.0 License