In summer 2018, the Directory of Open Access Journals (DOAJ) ran a survey of all publishers holding a DOAJ account (i.e., with at least one journal) in their directory.
A short report summarises the results from more than 1000 replies to the survey. It reveals increasing standardisation of open access publishers (73% now report using DOIs and 84% provide article metadata) and some interesting shifts in the country affiliation of open access journals, such as a sharp increase in the number of journals published in Indonesia, and a decline in those from India. As for the ownership of the open access journals, the most popular in DOAJ are non-commercial, academic and society publishers. But in terms of output (number of papers published), eight out of ten largest publishers are commercial publishers.