Diamond open access

Open access distributed with no fees to author and reader

Diamond open access refers to academic texts published/distributed/preserved with no fees to either reader or author. Alternative labels include platinum open access, non-commercial open access, cooperative open access or, more recently, open access commons. While these terms were first coined in the 2000s and the 2010s, they have been retroactively applied to a variety of structures and forms of publishing, from subsidized university publishers to volunteer-run cooperatives that existed in prior decades.

This keyword could refer to multiple things. Here are some suggestions: