Compare software

Icinga 2Zabbix
Free

Free and open source. Hosting, hardware and any external services are separate.

 Free

Free and open source under the AGPL. Support and services are paid.

Self-hosted Linux, Web, Self-hosted
  • Supports distributed monitoring setups
  • Runs service checks and notifications
  • Scales to tens of thousands of monitored devices with proxies
  • Large template library covering common hardware and services
  • A complete deployment involves configuration and optional web-interface components.
  • Configuration is extensive; the learning curve is real
  • Interface density makes simple setups feel heavy
Self-hosted Self-hosted
Open source Open source
License: GPL-3.0 License: AGPL-3.0
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.