jWYSIWYG - Choose jWYSIWYG demo

Take a look at demos:

1. Basic
2. Full
3. AJAX
4. UI Resizable
5. UI Dialogs
6. Hide headings
7. Enable RTL (Experimental)
8. AutoGrow
9. CSS Autoloading & initialContent
10. Custom Controls
11. Test Plugins
12. Writing Plugins
13. File Manager Plugin
14. PHP File Manager Plugin