Report Open Access

OA Diamond Journals Study. Part 1: Findings

Bosman, Jeroen; Frantsvåg, Jan Erik; Kramer, Bianca; Langlais, Pierre-Carl; Proudman, Vanessa

Project manager(s)
Mounier, Pierre
Project member(s)
Becerril, Arianna; Bjørnshauge, Lars; Redhead, Claire; Torny, Didier

From June 2020 to February 2021, a consortium of 10 organisations undertook a large-scale study on open access journals across the world that are free for readers and authors, usually referred to as “OA diamond journals”. This study was commissioned by cOAlition S in order to gain a better understanding of the OA diamond landscape.

The study undertook a statistical analysis of several bibliographic databases, surveyed 1,619 journals, collected 7,019 free text submissions and other data from 94 questions, and organised three focus groups with 11 journals and 10 interviews with hosting platforms. It collected 163 references in the academic literature, and inventoried 1048 journals not listed in DOAJ.

The results of the study are available in the following outputs:


  • A wide archipelago of relatively small journals serving diverse communities
  • OA diamond journals are on the road to full compliance with Plan S
  • A mix of scientific strengths and operational challenges
  • An economy that largely depends on volunteers, universities and government
This report was supported by Science Europe and cOAlition S
Files (8.5 MB)
Name Size
8.5 MB Download
All versions This version
Views 30,59730,592
Downloads 16,11316,113
Data volume 136.6 GB136.6 GB
Unique views 26,41226,407
Unique downloads 14,10014,100


Cite as