Institutional repositories, which make the research results of a university or research institution freely accessible on the internet, have been an important part of the information infrastructure for many years. However, since their introduction, they have had to hold their own against subject-specific repositories, which are often the more sought-after alternative for researchers. Furthermore, academic social networks such as ResearchGate or Academia.edu pose another challenge for (institutional) repositories. Moreover, the trend towards integration of information systems at universities is leading to considerations of merging previously separate current research information systems and repositories. In view of these developments, the question arises as to what extent institutional open access repositories are still the solution of choice today for the dissemination and long-term archiving of research results, and how repositories should be designed in order to be equipped to meet current and future requirements.