Aloha Editor

Aloha Editor is an open source WYSIWYG editor that can be used in webpages.

Aloha Editor is built to facilitate editing of content within the same layout that is shown to readers. In this respect, it is different from most other web-based WYSIWYG editors. Aloha features a floating contextual toolbar that hovers over content that the user is actively editing. Aloha Editor tries to implement its functionality respecting the HTML5 Specification Draft.