List of academic databases and search engines
Sl. No	Name	Discipline(s)	Publisher
1	Academic Search	Multidisciplinary	EBSCO Publishing
2	Aerospace & High Technology Database	Aerospace, Aeronautics, Astronautics	ProQuest
3	African Journals OnLine (AJOL)	Multidisciplinary	African Journals OnLine
4	AgeLine	Sociology, Gerontology	EBSCO Publishing
5	AGRICOLA: Agricultural Online Access	Agriculture	Produced by the United States National Agricultural Library. Free access provided by NAL.    Subscription access provided by ProQuest,    OVID.
6	AGRIS: Agricultural database	Agriculture	Produced by the Food and Agriculture Organization of the United Nations. http://agris.fao.org AGRIS
7	AiritiInc	Multidisciplinary	AiritiInc
8	Analytical Abstracts	Chemistry	Royal Society of Chemistry
9	Analytical sciences digital library	Analytical chemistry	National Science Digital Library and the Analytical Chemistry Division of the American Chemical Society
10	Anthropological Index Online	Anthropology	Royal Anthropological Institute
11	Anthropological Literature	Anthropology	Maintained by Harvard University. Non-Harvard access provided by OCLC
12	Arachne	Archaeology, Art history	German Archaeological Institute & the University of Cologne
13	Arnetminer	Computer Science	Tsinghua University
14	Arts & Humanities Citation Index	Arts, Humanities	Thomson Reuters
15	arXiv	Physics, Mathematics, Computer science, Nonlinear sciences, Quantitative biology and Statistics	Cornell University
16	Association for Computing Machinery Digital Library	Computer Science, Engineering	Association for Computing Machinery
17	Astrophysics Data System	Astrophysics, Geophysics, Physics	Harvard University
18	ATLA Religion Database	Religious studies
19	AULIMP: Air University Library's Index to Military Periodicals	Military Science	Air University
20	BASE: Bielefeld Academic Search Engine	Multidisciplinary	Bielefeld University
21	Beilstein database	Organic chemistry	Available from Elsevier under the product name Reaxys
22	Biological Abstracts	Biology	Available from Thomson Reuters
23	BioOne	Biology, Ecology, and Environmental Science	Available from BioOne
24	Bioinformatic Harvester	Biology, Bioinformatics	Available from Liebel-Lab     KIT Karlsruhe Institute of Technology
25	Book Review Index Online	Book reviews	Thomson Gale