OpenOasis wants to be an important source for open access (the concept, the principles, the advantages, the different routes to open access, etc.).
ROARMAP (Registry of Open Access Repository Mandates and Policies) is a searchable international registry charting the growth of open access mandates and policies adopted by universities, research institutions and research funders.
COAR: The Confederation of Open Access Repositories works on technical guidelines and standards, exchanges expertise and best practices and helps members in advocating open access practices and training.
SPARC Europe: SPARC Europe's mission is to create change and build a better scholarly communication system for the future. Focus of the membership organisation is on policy and advocacy and training.
ArXiv is an open access archive to e-prints in physics, mathematics, computer science and quantitative biology.
BioMed Central is a publisher of peer-reviewed open access journals in the areas of biology, biomedicine and medicine.
BioOne is a platform with more than 160 peer-reviewed full text journals in the fields of biology, environmental science, ecology, ... Sixteen titles are in Open Access.
The Public Library of Science (PLoS) is a nonprofit scientific publishing project aimed at creating a library of open access journals and other scientific literature under an open content license.
InTech is a multidisciplinary open access publisher of books covering the fields of Science, Technology and Medicine.
The Networked Digital Library of Theses and Dissertations (NDLTD) is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations. It supports electronic publishing and open access to scholarship in order to enhance the sharing of knowledge worldwide.
OAIster is a union database of millions of records representing open access resources that was built by harvesting from open access collections worldwide using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH).
Open Grey is an open access database providing access to 700.000 bibliographical references of grey literature (paper) produced in Europe.
OpenDOAR is an authoritative directory of qualitative academic open access repositories.