Scopus® (157,057)
MEDLINE (85,073)
Science Citation Index Expanded (82,313)
Academic Search Complete (45,316)
ScienceDirect (39,499)
Complementary Index (39,144)
China Online Journals (Wanfang) (27,123)
OAIster (25,301)
Gale Academic OneFile (21,683)
Directory of Open Access Journals (13,388)
Springer Nature Journals (10,673)
ClinicalKey (6,715)
Journals@OVID (6,654)
MathSciNet via EBSCOhost (6,110)
IEEE Xplore Digital Library (5,699)
Supplemental Index (5,320)
arXiv (4,810)
USPTO Patent Grants (3,643)
SwePub (3,044)
Gale General OneFile (2,921)
Airiti Library eBooks & Journals - 華藝線上圖書館 (2,565)
Europeana (2,502)
Social Sciences Citation Index (2,244)
eScholarship (1,927)
Business Source Complete (1,459)
JSTOR Journals (1,301)
RePEc (1,224)
RISS - DDOD (Digital Dissertations On Demand) (1,136)
USPTO Patent Applications (871)
Education Source (628)
De Gruyter Brill Online (542)
NASA Technical Reports (531)
J-STAGE (389)
Korea Citation Index (286)
ERIC (285)
Digital Access to Scholarship at Harvard (DASH) (283)
Naxos Music Library (245)
ProjectMUSE (191)
ACM Full-Text Collection (182)
BrillOnline Reference Works (172)
BioOne Complete (156)
ClinicalTrials.gov (138)
SciELO (130)
SciTech Connect (130)
Academic Conferences in China (Wanfang) (114)
Communication & Mass Media Complete (102)
ERICdata Higher Education Knowledge (98)
DBPIA (82)
Korean Studies Information Service System (81)
Arts & Humanities Citation Index (80)
CINAHL Plus with Full Text (80)
KERIS Theses & Dissertations (78)
Library, Information Science & Technology Abstracts (70)
SpringerProtocols (67)
British Library EThOS (65)
Regional Business News (62)
Artstor on JSTOR (For institutions outside of the US) (56)
Wiley Online Reference Works (54)
Oxford Art Online (51)
GeoScienceWorld (43)
TDX (41)
Emerald Insight (41)
APA PsycArticles (29)
eArticle (28)
Aerospace Research Central (26)
SpringerMaterials (23)
Grove Music Online (22)
ASTM Compass (20)
JoVE Journal (19)
Oxford Scholarship Online (18)
Oxford Reference (16)
스콜라(Scholar) (14)
SSOAR – Social Science Open Access Repository (14)
Cochrane Database of Systematic Reviews (13)
Alexander Street (13)
HeinOnline (12)
KoreaScience (9)
Oxford Medicine Online (8)
University Press Scholarship Online (7)
SveMed+ (6)
F1000Research (5)
GOBI E-books (5)
E-LIS (Eprints in Library & Information Science) (3)
ASM Medical Materials Database (3)
Research Starters (2)
Wiley Digital Archives (2)
Westlaw UK (2)
Persée (2)
AccessEngineering (2)
OAPEN Library (1)
ASM Failure Analysis Database (1)
Choice Reviews (1)