Monitoring & observability
Watch servers, network gear, virtual machines and applications; collect metrics, build dashboards, and alert on failures.
Zabbix
Open-source monitoring for servers, network gear, VMs and applications.
open source desktop download
PRTG Network Monitor Sensor-based network and infrastructure monitoring from Paessler.
freemium hybrid
Nagios (Core / XI) The classic host and service monitor: free Core, commercial XI.
freemium desktop download
Grafana Visualisation and dashboards over Prometheus, Zabbix, databases and clouds.
open source hybrid
Prometheus Time-series monitoring and alerting, the de-facto standard for cloud-native systems.
open source desktop download
Datadog Cloud observability — metrics, traces and logs — with no monitoring servers to run.
paid · trial SaaS · ad-safe