Zenoss Core Alternatives

Track, record, alert and visualize performance and availability of IT resources

Complete monitoring and alerting for servers, switches, applications, and services

PnP networked resource monitoring tool that can help to answer the what just happened to kill our performance

Icinga is a fork of Nagios and is backward compatible.

Help desk software features that work for IT

See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.

Monit is a free open source utility for managing and monitoring, processes, files, directories and filesystems on a UNIX system. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations.

Cacti is a complete network graphing solution. It provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features.

A fully featured network monitoring system that provides a wealth of features and device support.

An advanced network monitoring solution to monitor network up/downtime, traffic and usage.

MikroTik is a Latvian company which was founded in 1996 to develop routers and wireless ISP systems. MikroTik now provides hardware and software for Internet connectivity in most of the countries around the world.

Check_MK is comprehensive IT monitoring solution in the tradition of Nagios.