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ManageEngine OpManager vs Observium: catalog facts
ManageEngine OpManager	Observium
Freemium Free edition for a limited number of devices, with paid tiers for larger networks.	Freemium A free community edition is available. Professional and Enterprise editions are paid.
Self-hosted	Linux, Web, Self-hosted
Covers fault, performance and configuration management in one console Free tier makes it accessible for monitoring smaller networks	Autodiscovery means devices appear with graphs and inventory automatically Clean interface that stays readable with many devices
Larger networks require paid tiers to unlock full device and feature limits Proprietary software, so you cannot inspect or modify the underlying code	The community edition receives releases far less often than the paid one Alerting and some features are in the subscription edition
Self-hosted, Downloadable app	Self-hosted
Closed source	Closed source
License not stated	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.