OpenNitro can be installed on servers hosting mulptiple sites, without
having to install the codebase multiple times. Just unpack the OpenNitro
source code in a shared directory (for instance /usr/local/OpeNitro/). For
every site you have that uses OpenNitro you only have to copy the html
directory to the document root of the site and create an ini with the
approriate settings (see default ini's in the OpenNitro root directory).