The Directory of Open Access Journals was launched in 2003 at Lund University, Sweden, with 300 open access journals and today contains ca. 9000 open access journals covering all areas of science, technology, medicine, social science and humanities.
DOAJ is a service that indexes high quality, peer reviewed Open Access research journals, periodicals and their articles' metadata. The Directory aims to be comprehensive and cover all open access academic journals that use an appropriate quality control system and is not limited to particular languages or subject areas. The Directory aims to increase the visibility and ease of use of open access academic journals—regardless of size and country of origin—thereby promoting their visibility, usage and impact. All data is freely available.