This talk was given as part of the DANS Open Day 2026 Social Sciences is one of the largest research fields in the Netherlands with faculties at every Dutch universities and various institutes who together produce a lot of data that is of interest to the field.To make these datasets findable, DANS has been involved in the development of the ODISSEI Portal: the place to discover social science datasets in the Netherlands. You can search through more than 10.000 datasets within one integrated interface. Instead of visiting every university or institute that hosts social science data separately, all information is visible and harmonised within one interface. The portal automatically harvests social sciences datasets from all universities affiliated with DataverseNL – the Dutch network, and the ambition is to provide full coverage of all available data. This session is especially for institutes that hold social sciences data but are not yet included in the portal. In this session, we will present the ODISSEI Portal and explain how providers can onboard their data collections and showcase how the portal improves data findable in the portal itself as well as towards international data aggregators.