The TOP Factor is a project of the Center for Open Science. It evaluates journals in terms of their transparency and openness. The aim is to make a contribution to changing the attitude of publishers towards more reproducibility and transparency. To do this the journals (which are not all necessarily accessible in Open Access) are evaluated using ten different criteria, of which the availability of data is one. Top Factor can be helpful in the selection of a suitable (Open Access) journal for publication, because it shows which journals deal with research data transparently.