Zenoss Inc. is a company that develops hybrid IT monitoring and analytics software. The company was founded in 2005 and is headquartered in Austin, Texas. Zenoss delivers IT service assurance for enterprises with its open-source software, Zenoss Core and its commercial software, Zenoss Service Dynamics, for physical, virtual and cloud-based IT infrastructures. Zenoss was founded in Annapolis, Maryland in 2005. In February 2006, Zenoss launched its first open-source IT monitoring product Zenoss Core. In August 2006, Zenoss closed $4.8 million Series A financing round led by Boulder Ventures and Intersouth Partners. By November 2006, Zenoss Core became the most downloaded commercial open source IT management platform.