Nagios/Naemon Nagios or Naemon as standalone core and/or integrated into OMD. Questions on setup and configuration. Enterprise editions are not supported. CheckMK CheckMK as an add-on and/or fully integrated into OMD as CheckMK Raw Edition (CRE). Questions on plugins, configuration, inventory and integrations. Enterprise editions are not supported. Labs OMDLabs edition with additional cores and addons.