typo3

Typo3 is primarily a Content Management System (CMS). We could also call it a Website Management System - which is probably a more apropriate description. These fine words is the industry name of a system designed to manage form and content of websites.
Typo3 works - as many other CMS's - via the very webbrowser you're actually using to surf the pages! In other words you're adding, updating and deleting content directly online with Microsoft Internet Explorer or Netscape Navigator. Of course you must have username/password access to the administration-system of a given website.