IEEE Xplore
The definitive index for electrical engineering, computer science, and electronics — standards included.
Tier 2 AcademicSubscription
Research Database Directory
Every research database, reviewed.
ERIC
The free, authoritative index for education research and practice.
Tier 2 Open AccessFree
PsycINFO
The American Psychological Association's index — the standard for psychology and behavioral science.
Tier 2 AcademicSubscription
CINAHL
The core index for nursing and allied health literature.
Tier 3 AcademicSubscription
Cochrane Library
The home of systematic reviews — the gold standard for evidence in healthcare.
Tier 2 AcademicSubscription
Embase
Elsevier's biomedical index — pharmacology-deep and built for systematic reviews.
Tier 2 AcademicSubscription
CORE
The world's largest aggregator of open-access research — full text at scale.
Tier 2 Open AccessFree
Connected Papers
A visual map of a research field — find the papers around the one you already know.
Tier 3 ToolsFreemium
ResearchGate
The academic social network where researchers share papers — and their metrics.
Tier 3 ToolsFree
HathiTrust
A massive digital library of scanned books — the scholarly record, digitized.
Tier 3 Open AccessFreemium