Wikipedia
Naaya
Naaya is an open source content management system built on top of the Zope Internet and application server. It is suited for people that want to quickly start a website and reduce to a minimum the need to refer to technical system administrators for its update and maintenance. Also, it is suited for creating networks of portals due to the integrated search across multiple sites, skinnable layout and support for creating self-installable toolkits.
It is released under the Mozilla Public License (MozPL or MPL) and it is designed in a modular and extensible way. It was initially developed by the European Environment Agency and several modules were added to suit the needs of other European institutions.