Scopus® (12,329,541)
Arts & Humanities Citation Index (4,087,354)
Science Citation Index Expanded (3,993,203)
Complementary Index (3,978,713)
Academic Search Complete (2,760,118)
Supplemental Index (2,608,270)
OAIster (2,565,244)
MEDLINE (2,475,325)
Gale Academic OneFile (1,436,359)
Gale General OneFile (1,286,325)
Social Sciences Citation Index (1,049,802)
Europeana (956,153)
Springer Nature Journals (838,486)
ScienceDirect (744,430)
JSTOR Journals (662,631)
China Online Journals (Wanfang) (631,012)
USPTO Patent Grants (605,805)
MathSciNet via EBSCOhost (593,900)
Directory of Open Access Journals (541,253)
Journals@OVID (530,509)
IEEE Xplore Digital Library (460,288)
Business Source Complete (331,335)
Education Source (234,421)
arXiv (233,019)
HeinOnline (174,394)
J-STAGE (153,634)
SciTech Connect (151,620)
SwePub (146,254)
RePEc (123,344)
SpringerMaterials (114,757)
Regional Business News (110,629)
De Gruyter Online (106,604)
MLA International Bibliography (88,181)
NASA Technical Reports (84,553)
ProjectMUSE (80,100)
USPTO Patent Applications (74,977)
ERIC (69,603)
DBPIA (68,903)
eScholarship (61,956)
BrillOnline Reference Works (61,936)
GOBI E-books (48,990)
CINAHL Plus with Full Text (48,127)
Korea Citation Index (43,597)
Library, Information Science & Technology Abstracts (42,717)
Korean Studies Information Service System (26,897)
BioOne Complete (25,129)
Artstor on JSTOR (For institutions outside of the US) (24,398)
Communication & Mass Media Complete (24,139)
Persée (24,062)
Airiti Library eBooks & Journals - 華藝線上圖書館 (23,544)
British Library EThOS (21,928)
Oxford Reference (21,905)
SciELO (18,461)
APA PsycArticles (18,315)
Accessible Archives (17,926)
KERIS Theses & Dissertations (16,732)
Academic Conferences in China (Wanfang) (16,031)
ChemSpider (15,618)
GeoScienceWorld (15,285)
ACM Full-Text Collection (14,642)
Wiley Online Reference Works (14,149)
Research Starters (13,676)
Oxford Scholarship Online (13,638)
SveMed+ (13,431)
Alexander Street (12,793)
Naxos Music Library (10,328)
ClinicalTrials.gov (9,109)
Emerald Insight (7,911)
RISS - DDOD (Digital Dissertations On Demand) (7,716)
ASTM Compass (7,639)
Aerospace Research Central (7,531)
Wiley Digital Archives (6,334)
Canadiana Online (6,020)
Westlaw UK (5,897)
스콜라(Scholar) (5,638)
eArticle (5,000)
Digital Access to Scholarship at Harvard (DASH) (4,471)
University Press Scholarship Online (4,113)
TDX (3,676)
Oxford Art Online (2,988)
Oxford Medicine Online (2,519)
ASM Alloy Center Database (1,921)
E-LIS (Eprints in Library & Information Science) (1,568)
ASM Medical Materials Database (1,321)
Grove Music Online (1,311)
Choice Reviews (1,261)
JoVE Journal (1,159)
SSOAR – Social Science Open Access Repository (1,042)
Economist Historical Archive (959)
Cochrane Database of Systematic Reviews (728)
Newswires (661)
Oxford Clinical Psychology (628)
F1000Research (620)
McGraw-Hill Medical (572)
Britannica Online (541)
OAPEN Library (494)
AccessScience (417)
BrillOnline Primary Source (363)
ICPSR Data Archive (307)
ERICdata Higher Education Knowledge (245)
AccessEngineering (227)
MLA Directory of Periodicals (223)
KRpia (163)
CogPrints (160)
JoVE Science Education Database (159)
ASM Micrograph Database (150)
ASM Failure Analysis Database (107)
BMJ Best Practice US (100)
JoVE Core (65)
OECD iLibrary (58)
European Union Open Data Portal (50)
JoVE Encyclopedia of Experiments (25)
agriRxiv (22)
JoVE Lab Manual (21)
SMART Imagebase (21)
BMJ Clinical Evidence (6)
Industry Studies Working Papers (6)
Oxfam Policy & Practice (4)