HTML Rich Text Area 

The HTML Rich Text Area is a web browser tool that replaces textareas with a powerful WYSIWYG editor. It implements a user interface familiar to any Windows user enabling even novice computer users to quickly format text in a variety of styles.
wysiwyg textarea editor rich text area textbox rtf html web browser markup website webmaster text edit wysiwyg editor

GYZ Tree Document Editor 

GYZ Tree Document Editor is a tree-structured document editor. It saves your time by creating pages associated to tree nodes within a single document, avoiding creating a lot of separated files on the disk. One single data file for a whole "tree".
tree view tree structure text editor structured document rich document editor