Net Farm

Zabbix vs PRTG Network Monitor

Zabbix is free and scales to anything if you can run it; PRTG is faster to stand up on Windows with polished dashboards, at a per-sensor cost.

Zabbix PRTG Network Monitor
status
open source desktop download
freemium hybrid
platforms Linux/Unix server, web UI; agents for Windows/Linux/macOS/Unix Windows server + web/mobile; also SaaS (Hosted Monitor)
licence Open source · AGPL-3.0 Freemium · free up to 100 sensors
price Free; paid support available Free up to 100 sensors; paid from ~$1,750/yr (PRTG 500)
summary Open-source monitoring for servers, network gear, VMs and applications. Sensor-based network and infrastructure monitoring from Paessler.