Some Berlin universities teamed up to provide knowledge for free to authors and readers by setting up a (genuine) open access publisher, not for profit, without fees.
Berlin Universities Publishing (BerlinUP) “deliberately sets itself apart from profit-oriented, commercial publishers and strives for a publication model that is free of charge for publishers and readers in the sense of diamond open access. In this way, the publishing house follows the demands of scientific organizations and funding agencies to enable freely accessible first publications with science-related publication infrastructures of public institutions.”
“BerlinUP is actively engaged in a sustainable, quality-focused, and cost effective transformation of scholarly publishing to open access. This includes moving away from exclusively quantitative indicators for evaluating scientific quality or even ranking publishers.”
“Berlin Universities Publishing (BerlinUP) is the open access publisher of Freie Universität Berlin, Humboldt-Universität zu Berlin, Technische Universität Berlin, and Charité – Universitätsmedizin Berlin in the Berlin University Alliance (BUA).”