Books, libraries & research
- Project GutenbergAccess tens of thousands of free public-domain ebooks.
- Anna's ArchiveSearch a large index of books and academic materials.
- arXivOpen repository of research preprints across science, mathematics, computing, and related fields.
- Biodiversity Heritage LibraryExplore digitized biodiversity literature and historic natural-history books.
- Connected PapersVisually explore relationships between academic papers.
- ConsensusSearch scientific research and explore evidence-backed answers.
- Cooper Hewitt CollectionExplore the Cooper Hewitt Smithsonian Design Museum collection online.
- David Rumsey Map CollectionExplore a large digitized collection of historical maps.
- Digital Public Library of AmericaSearch digital collections from libraries, archives, and museums across the United States.
- DigitalNZSearch New Zealand digital heritage and cultural collections.
- DOAJSearch the Directory of Open Access Journals.
- ElicitAI-assisted research and literature review.
- EuropeanaExplore digitized European cultural heritage.
- Florence Griswold MuseumExplore American art, exhibitions, and museum collections.
- Google Arts & CultureExplore museums, artworks, cultural sites, stories, and virtual exhibitions.
- Internet ArchiveExplore archived websites, books, media, and other digital collections.
- Internet Encyclopedia of PhilosophyPeer-reviewed reference articles on philosophers and philosophical topics.
- Library GenesisSearch for books and academic materials.
- Library of CongressExplore digitized books, photographs, recordings, maps, manuscripts, and historical collections.
- LibriVoxVolunteer-read audiobooks of public-domain works.
- Loyal BooksFree public-domain audiobooks and ebooks.
- Open LibraryExplore a digital library and borrow available books online.
- Our World in DataExplore research and data on global health, population, energy, poverty, technology, and more.
- PDF DriveSearch for downloadable PDF books and documents.
- PhilosophizeIntroductory philosophy resources.
- RijksmuseumExplore the Rijksmuseum's art collection and digital resources.
- Sci-HubSearch for research papers.
- SciSpaceFind, understand, and work with academic research papers.
- Semantic ScholarAcademic search engine for scientific literature.
- Smithsonian Open AccessExplore millions of Smithsonian digital items and open-access assets.
- Stanford Encyclopedia of PhilosophyScholarly reference articles covering philosophy and related fields.
- The Metropolitan Museum of ArtExplore the Met's collection, exhibitions, research, and open-access artworks.
- The Public Domain ReviewExplore curious and remarkable works from the history of art, literature, and ideas.
- TroveExplore Australian newspapers, books, images, archives, and cultural collections.
- UbuWebAvant-garde and experimental art, film, sound, and writing archive.
- UnpaywallFind freely accessible versions of research papers.
- WikiArtBrowse a large online collection of visual art organized by artist, style, and movement.
- Wikipedia Random ArticleJump to a random Wikipedia article.
- World Bank Open DataExplore global development indicators and World Bank datasets.