ISPMan is a system to design massive ISPs using LDAP as the backend.
ISPMan provides a web front end and a command line interface to create virtual domains and manages users, dns information, email infos and httpd setup data for these vhosts.
The 3rd Base is a Shared Hosting administrations panel. It can be used by admins, resellers and customers to configure VirtualHosts, Domains, DB's, FTP / WebDAV.
It's written in PHP5 fully object oriented with an Ajax-based GUI using the dojo toolkit.