What is the OTRS Package Manager (OPM)?
From version 2.0 on, OTRS is composed of a central framework and several add-on packages to extend the system optionally. To facilitate installation of the various components they can be installed or removed comfortably via the administration interface of OTRS using the package manager. Packages must be in opm format (OTRS package manager) to be added or removed via the package management, no other formats are supported.