Thanks to Infoworld who named Zenoss Core Best of Open Source for Network Monitoring.  Infoworld describes Zenoss as as a scalable and easy-to-use replacement for legacy management architecture.
InfoWorld’s annual BOSSIES recognize the best free and open source software the world has to offer to businesses, IT professionals, and productive individuals who rely on [...]

SingleHop, a fast-growing full service managed hosting provider is another happy Zenoss Core user. According to SingleHop’s VP of Operations, Andy Pace,
“Zenoss is Nagios done right, with frosting and a cherry on top!”
He goes on to say even more (this is such high praise, I can’t help but quote liberally):
SingleHop utilizes this brilliant piece of [...]