Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.
CKEditor - Real-time collaborative future-ready rich text editor
Aloha Editor - Aloha Editor is an HTML5 WYSIWYG Editor that gives you a total new experience when editing.
Froala Editor V2 - A beautiful modern WYSIWYG HTML text editor
ContentTools - A small & beautiful WYSIWYG editor for HTML content.
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.