The WikiJournal of Science is an ISSN-registered, peer reviewed, open access journal in science, technology, engineering and mathematics published free of charge.
"The journal is hosted by the Wikimedia Foundation, the same organization that runs Wikipedia. Articles that pass peer-review are published as a citeable, indexed PDF, and suitable text and images are integrated into Wikipedia and related projects."
via @alexh
https://en.wikiversity.org/wiki/WikiJournal_of_Science/About