Zenoss Core is described as 'Zenoss (Zenoss Core) is an open source application, server and network management platform based on the Zope application server' and is an app in the Network & Admin category. There are more than 50 alternatives to Zenoss Core for a variety of platforms, including Linux, Windows, Online / Web-based, Mac and Self-Hosted solutions. The best alternative is Zabbix, which is both free and Open Source. Other great apps like Zenoss Core are Nagios (Freemium, Open Source), Spiceworks (Free), Datadog (Paid) and LibreNMS (Free, Open Source).
Gather and analyze accurate statistics and performance metrics, visualize it, get notified about current and potential issues without delay, and take advantage of our time-tested professional development and support.
Datadog is a monitoring service for IT, Dev & Ops teams who write and run applications at scale, and want to turn the massive amounts of data produced by their apps, tools and services into a unified view of IT infrastructure. 120+ Integrations!.
An advanced network monitoring solution to monitor network up/downtime, traffic and usage. Features include availability, performance, and bandwidth monitoring (SNMP, WMI, packet sniffing, NetFlow), instant alerts, reporting, failover clustering.
Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.