DOAJ (Directory of Open Access Journals)
Free full text quality controlled scientific and scholarly journals.
A unique search-engine dedicated to indexing free and open access journals and theses in the arts and humanities, science, biomedical, business and ecology related topics.
Based in the UK, CORE’s mission is to aggregate all open access research outputs from repositories and journals worldwide and make them available to the public. In this way CORE facilitates free unrestricted access to research for all.
Brings together free, full-text scholarly articles from hundreds of universities and colleges worldwide. Curated by university librarians and their supporting institutions, the Network includes a growing collection of peer-reviewed journal articles, book chapters, dissertations, working papers, conference proceedings, and other original scholarly work.
OpenDOAR: the Directory of Open Access Repositories
An authoritative directory of 2,000 academic open access repositories with freely available academic research information. Each repository has been visited by project staff to give a quality-controlled list of repositories.
Sherpa Romeo is an online resource that aggregates and analyses publisher open access policies from around the world and provides summaries of publisher copyright and open access archiving policies on a journal-by-journal basis.