Archive of European Integration (AEI) - Journals and Series
http://aei.pitt.edu/view/series/

Biodiversity Heritage Library - Dergiler
http://www.biodiversitylibrary.org/

BioMed Central
http://www.biomedcentral.com/

bioRxiv Beta (ThePreprint Server for Biology)
http://biorxiv.org/

CA: A Cancer Journal for Clinicians
http://onlinelibrary.wiley.com/journal/10.3322/(ISSN)1542-4863

Directory of Open Access Journals (DOAJ)
https://doaj.org/

Elementa: Science of the Anthropocene
https://www.elementascience.org/

Multidisciplinary Digital Publishing Institute (MDPI) Open Access
http://www.mdpi.com/

Open Biology
http://rsob.royalsocietypublishing.org/

ThePublic Library of Science (PLOS)
https://www.plos.org/publications

RoyalSociety Open Science
http://rsos.royalsocietypublishing.org/

TÜBİTAK ULAKBİM Türkiye Akademik Arşivi
http://arsiv.ulakbim.gov.tr/