Stable Version for Virtual Domains is 1.2, Codename McCoy (Joomla 1.5, 1.6, 1.7, 2.5, 3.x).

Virtual Domains is a Component for Joomla (>=1.5) that provides Multi-domain capability for Joomla without changing the Joomla core files. Simply register any number of additional available domains in the components backend and define their properties.

You can run different web sites from a single Joomla installation with specific designs, (default) languages, home page content and navigation.