Fatcat
The Internet Archive's open catalog of scholarship — the editable backbone under IA Scholar.
Tier 3 Open AccessFree
Research Database Directory
Every research database, reviewed.
Google Dataset Search
Google for datasets — one search box across millions of data repositories.
Tier 2 ToolsFree
PubPeer
Post-publication peer review — where the community flags what the journals missed.
Tier 3 ToolsFree
Overton
The policy-document database — see where research shows up in government.
Tier 3 CorporateSubscription
Paperity
An aggregator of open-access papers — one search across gold and hybrid OA.
Tier 3 Open AccessFree
Elicit
The AI research assistant built for evidence — search, screen, and extract at scale.
Tier 2 ToolsFreemium
Retraction Watch
The database of retractions — know when a paper has been pulled.
Tier 2 Open AccessFree
LILACS
Latin American and Caribbean health literature — the regional index PubMed misses.
Tier 3 Open AccessFree
DistillerSR
Enterprise-grade systematic review automation — for audit-heavy evidence work.
Tier 3 ToolsSubscription
Sciety
Preprint evaluations in one place — see which preprints experts have vetted.
Tier 3 ToolsFree