Ariadne is a very easy to use CMS, it mimicks your file browser, e.g. Windows Explorer. You can browse through your website as if it was a folder on your desktop. Options are clearly labeled. Dialogs use wizards where appropriate. Editing content is a breeze with the WYSIWYG html editor.
Ariadne uses the Yahoo User Interface (YUI) library, so all this works on almost any browser.