Saurus CMS was a popular web content management system developed from ~1997 in Perl language. PHP based version from 2001 to 2013.
The development has been discontinued ever since.

You can download or clone the last version 4.7.
System requirements: PHP 5.0.0 to 5.3, MySQL 4.x to 5.1.35, Apache with mod_rewrite, Linux.