Zenoss Core is described as 'Zenoss (Zenoss Core) is an open source application, server and network management platform based on the Zope application server. Released under the GNU General Public License (GPL) version 2, Zenoss Core provides a web interface that allows system administrators to monitor' and is an app in the network & admin category. There are more than 25 alternatives to Zenoss Core for a variety of platforms, including Linux, Windows, Web-based, Self-Hosted and Android apps. The best Zenoss Core alternative is Zabbix, which is both free and Open Source. Other great apps like Zenoss Core are Nagios, Datadog, Spiceworks and Monitorix.