The OPAC keeps its name, but behind the scenes it now runs on an entirely new search platform. The new system offers a more modern search experience, a cleaner presentation of results, and more convenient access to print and electronic resources. The previous library catalog is being replaced by the discovery system “VuFind”, an open-source application for library search systems that was designed by libraries for libraries and is continuously developed through community collaboration.
Since September 1, the new OPAC at opac-ub.ku.de replaces our former library catalog.
Your favorites lists from the current OPAC have been transferred to the new system as part of the final switchover. Since September 1, 2026, these lists are available in the new OPAC.
You can sign in to the new OPAC the same way as before, using your user number and password.
The transition will be accompanied by 15-minute online introductions to the new interface, giving you a quick overview of all new features. For all dates and details, visit Tours and Courses »
Even though the beta phase is over, we'd still love to hear your feedback and suggestions: What is working well? Where are you running into issues? What features would you like to see added?
Please share your experience with us through our feedback form. Thank you for your support!
Please do not hesitate to contact our our information desk anytime — in person, by email, or by phone: