Academia
www.academia.edu
Academic Journals
www.academicjournals.org
African Journal Online
is the world's largest and preeminent platform of African-published scholarly journals
American Society of Civil Engineers
ascelibrary.org
Base
www.base-search.net
Bibsonomy
www.bibsonomy.org
Core
core.ac.uk
Elsevier
www.elsevier.com
Google Scholar
scholar.google.com
Grey Guide
greyguide.isti.cnr.it
Grey Literature Strategies
greylitstrategies.info
Grey Literature – List of Gateways
csulb.libguides.com
GreyNet International
www.greynet.org
HighWire: Free Online Full-text Articles
highwire.stanford.edu
Journal Guide
www.journalguide.com
Journal Seek
journalseek.net
JSTOR
Search over 10 million academic journal articles, books, and primary sources.
Lazy Scholar
www.lazyscholar.org
Leibniz Information Centre For Science and Technology University Library
indexes all reports of German publicly funded projects and many scientific papers.
Microsoft Academic
academic.research.microsoft.com
NRC Research Press
www.nrcresearchpress.com
OA.mg
oa.mg
Open Access Scientific Journals
www.pagepress.org
Open Grey
www.opengrey.eu
Oxford Journals
www.oxfordjournals.org
PubMed
Search more than 27 millions citations for biomedical literature from MEDLINE, life science journals, and online books.
Quetzal Search
www.quetzal-search.info
Research Gate
www.researchgate.net
SAGE Journals
online.sagepub.com
Science Publications
www.thescipub.com
ScienceDirect
www.sciencedirect.com
ScienceDomain
www.sciencedomain.org
SCIRP
www.scirp.org
Springer
link.springer.com
Taylor & Francis Online
www.tandfonline.com
The Collection of Computer Science Bibliographies
The CCSB is a collection of bibliographies of scientific literature in computer science from various sources, covering most aspects of computer science.
The Open Syllabus Project
opensyllabusproject.org
Wiley
eu.wiley.com
World Digital Library
www.wdl.org
World Science
worldwidescience.org
Zetoc
zetoc.jisc.ac.uk