OpenSource ObjectOrientedDatabase''''s:
	* PERST (http://www.Perst.Org)
		* Mature, fast, native C#, robust, m-s replication, simple
	* db4o (DeeBeeFourOh) http://www.db4o.com
	* GOODS (http://www.garret.ru/~knizhnik/goods.html)
	* OzoneDb (http://ozone-db.org)
	* ZODB (Z Object Database) http://www.zope.org/Wikis/ZODB/FrontPage :
		* Mature software, widely used (all ZopeApplicationServer/Plone CMS installations, but also used standalone)
		* Very flexible with mountable sub-databases and a wide number of storage backends, including SQL
		* Scales to any need using ZEO
		* Active development
	* Magma (http://wiki.squeak.org/squeak/2665)
		* ObjectOrientedDatabase for SqueakSmalltalk