opsi – Client Management

opsi (Open System Integration) is the central tool for managing Windows, Linux, and macOS client computers. The core component is a Linux server, taking care of the following tasks:

  • Automatic OS installation (Windows and Linux only)
  • Distribution of software, for example updates and patches
  • Inventory of hardware and software

opsi manages clients at multiple locations in one single administration interface. The configuration is stored in a central location, the repositories for the clients' software packages can be located in different places.


opsi is open source software; all main components are licensed under the AGPLv3 licence. The core functionality as well as the version provided here in the Univention App Centre can be used free of charge. In addition, the manufacturer, uib gmbh, offers paid extentions  as a subscription. Most of the extensions can be used free of charge for up to 30 clients. Here you can find the opsi Basic Licence.

  • Directory Connector: Synchronizes data between clients and an LDAP-enabled directory service (e.g. Active Directory or Samba 4)
  • License Management: Manages licenses in a central place, in the opsi configuration editor
  • UEFI/Secureboot: Support fpr UEFI/GPT partitions and Secureboot
  • Scalability: Performance enhancement for very large environments; starts the opsi service with multiple worker processes and/or runs the service in parallel on multiple servers
  • WIM-capture: captures an entire Windows installation (including configuration, installed software, and hotfixes), stores everything in the Windows Imaging Format (WIM), and allows you to install this on other clients

Additionally, the company uib gmbh provides affordable subscriptions which include ready-made packages for installadion, MS hotfixes, or special software. The manufacturer also offers support services for a fee, e.g. opsi maintenance contracts, workshops, and trainings.

About Client Synchronization
For UCS and UCS@school users the opsi extension Director Connector is of particular interest. It synchronizes data between the opsi clients and the UCS directory service. You can simply transfer the data from the UCS directory service to the opsi environment, avoiding the handling of duplicate data. It doesn't matter whether it's an Active Directory or Samba 4 domain. The Director Connector also allows opsi users to authenticate via the domain.
For more information please contact the vendor: info@uib.de

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Further information

Free commercial use. Some functions or services are liable to costs.
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