Sapiens Scientia

Sapiens Scientia Data Index

A structured index of major databases behind human knowledge: repositories, scholarly indexes, metadata graphs, library catalogs, data portals, registries, and scientific archives.

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General Knowledge Databases

Large structured or full-content repositories for encyclopedic, cultural, and web-scale knowledge.

WikipediaFull-content encyclopedia WikidataStructured knowledge graph Internet ArchiveFull-content archive Common CrawlOpen web crawl corpus Library of CongressLibrary and cultural archive

Scholarly Index Databases

Citation indexes, metadata graphs, search engines, and research intelligence databases for scholarly literature.

Google ScholarScholarly search engine OpenAlexOpen scholarly metadata graph Semantic ScholarAI-assisted scholarly search CrossrefDOI metadata infrastructure ScopusSubscription citation index Web of ScienceSubscription citation index DimensionsResearch intelligence graph The LensScholarly and patent database

Life Sciences And Medicine

Biomedical literature, full text, trials, sequences, proteins, genomes, and structures.

PubMedBiomedical literature index PubMed CentralFull-text biomedical repository Europe PMCLife-science literature platform ClinicalTrials.govClinical study registry GenBankNucleotide sequence database UniProtProtein sequence and function RCSB Protein Data Bank3D biomolecular structures EnsemblGenome annotation database

Physical Sciences And Preprints

Field-specific systems for physics, astronomy, mathematics, and fast-moving research communities.

arXivFull-content preprint repository INSPIRE HEPHigh-energy physics index NASA ADSAstronomy and physics index

Books, Libraries, And Archives

Catalogs and repositories for books, journals, dissertations, historical collections, and cultural memory.

WorldCatGlobal library catalog Google BooksBook search and scanned texts HathiTrustDigitized library repository JSTORScholarly archive ProQuestAcademic and historical databases EBSCOhostResearch database platform

Law, Government, And Patent Databases

Institutional knowledge systems for laws, public records, government documents, and technical invention.

LexisNexisLegal, news, and public records WestlawLegal research database GovInfoU.S. government publications EUR-LexEuropean Union law CourtListenerOpen legal opinions and dockets EspacenetPatent document database Google PatentsPatent search engine Derwent InnovationCurated patent intelligence

Public Data Databases

Open datasets, economic time series, global indicators, and news event databases.

World Bank DataGlobal development indicators OECD DataEconomic and social indicators FREDEconomic time series Data.govU.S. open data portal Kaggle DatasetsPublic dataset platform GDELTGlobal news event database

Knowledge Platforms And Discourse Archives

Large public platforms whose archives function as informal databases of video, discussion, technical problem-solving, and real-time discourse.

YouTubeVideo knowledge archive XReal-time public discourse RedditCommunity discussion archive Stack ExchangeExpert Q&A network

Repository Registries

Meta-catalogs that already track data repositories, open-access repositories, and scientific standards.

re3dataResearch data repository registry OpenDOAROpen-access repository directory FAIRsharingScientific database and standards registry DataCite Repository FinderRepository discovery tool