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