PubMed Central (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine. In keeping with National Library of Medicine’s legislative mandate to collect and preserve the biomedical literature, PMC serves as a digital counterpart to National Library of Medicine’s extensive print journal collection.
NISCAIR Online Periodicals Repository is a repository of full text articles from research journals published by CSIR-NISCAIR! Full text facility is provided for all nineteen research journals. NISCAIR Online Periodicals Repository also hosts three Popular Science Magazines viz. Science Reporter (SR), Vigyan Pragati (VP) & Science Ki Duniya (SKD) and a Natural Products Repository (NPARR).
DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals. All DOAJ services are free of charge including being indexed in DOAJ. All data is freely available.