Zenoss

Zenoss Inc., based in Annapolis, MD, offers an award-winning, complete open source network monitoring and systems management platform that discovers networked IT resources, monitors them for performance and availability, and tracks changes through a configuration management database (CMDB). Zenoss offers enterprise-grade support, services, and commercial add-ons through its Enterprise Subscription.  Make IT easy. The GPL Zenoss Core can be downloaded from www.zenoss.com/download.

Visit website for more information: http://www.zenoss.com