grouplens.org
Research data portal for exploring computer, systems and electrical engineering records, including datasets.
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theguardian.com
Open-data catalog covering Global, with filters and downloadable records.
gutenberg-open.ub.uni-mainz.de
Search an online collection of books, documents, media and archival records.
hi-tech.repo.nii.ac.jp
Search an online collection of books, documents, media and archival records.
hackernewsbooks.com
Hacker News Books helps search books, ebooks, papers, library records, or reading archives.
hacker-recommended-books.vercel.app
Hacker Recommended Books helps search books, ebooks, papers, library records, or reading archives.
hakodate-u.repo.nii.ac.jp
Search an online collection of books, documents, media and archival records.
hal.science
HAL helps search books, ebooks, papers, library records, or reading archives.
hal-univ-tours.archives-ouvertes.fr
Search an online collection of books, documents, media and archival records.
hal-cea.archives-ouvertes.fr
Search an online collection of books, documents, media and archival records.
halakhah.com
Halakhah helps search books, ebooks, papers, library records, or reading archives.
opendata-haldimand.hub.arcgis.com
Research data portal for exploring agriculture, forestry and veterinary medicine records, including datasets.
harmari.com
Harmari (Unified Listings Search) is a unified search tool for finding web pages, files, records, code, or internet intelligence.
lincs.hms.harvard.edu
Research data portal for exploring basic in biology and medicine records, including datasets.
hathitrust.org
HathiTrust helps search books, ebooks, papers, library records, or reading archives.
hbpms.blogspot.com
HBPMS helps search books, ebooks, papers, library records, or reading archives.
hdaudiobooks.net
HDAudiobooks helps search books, ebooks, papers, library records, or reading archives.
healthdata.gov
Research data portal for exploring life records, including aggregated data.
hri.fi
Open-data catalog covering Helsinki, with filters and downloadable records.
hermetics.net
Hermetic International helps search books, ebooks, papers, library records, or reading archives.
hermetics.org
Hermetics helps search books, ebooks, papers, library records, or reading archives.
heystacks.com
Heystacks helps search books, ebooks, papers, library records, or reading archives.
hiddenbible.com
Hidden Bible helps search books, ebooks, papers, library records, or reading archives.
heasarc.gsfc.nasa.gov
Research data portal for exploring biology records, including dataset.