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Icinga 2 vs Centreon: catalog facts
Icinga 2	Centreon
Free Free and open source. Hosting, hardware and any external services are separate.	Freemium Free community edition with paid enterprise tiers for advanced features and support.
Self-hosted	Self-hosted
Supports distributed monitoring setups Runs service checks and notifications	Business activity views connect infrastructure health to business impact Self-hosted deployment keeps monitoring data under your own control
A complete deployment involves configuration and optional web-interface components.	Full feature set is split across free and paid enterprise editions Enterprise-oriented tooling can be heavier to set up than lightweight monitors
Self-hosted	Self-hosted, Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
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
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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