oatd.org
OATD helps search books, ebooks, papers, library records, or reading archives.
Directory
Search results
Published directory entries matching your search.
oceanofpdf.com
OceanOfPDF helps search books, ebooks, papers, library records, or reading archives.
odcrawler.xyz
ODCrawler uses AI-assisted search to answer questions, cite sources, or find technical information.
swb.bsz-bw.de
Online database for accessing the German National Library authority file.
oku.club
Oku helps search books, ebooks, papers, library records, or reading archives.
okular.kde.org
Okular helps search books, ebooks, papers, library records, or reading archives.
old.repair.wiki
Old Layout helps search books, ebooks, papers, library records, or reading archives.
app.readomni.com
Omni helps search books, ebooks, papers, library records, or reading archives.
pypi.org
Python package that queries several search engines to find indexed Tor onion pages.
onisaga.com
OniSaga helps search books, ebooks, papers, library records, or reading archives.
onlinebooks.library.upenn.edu
Online Books Page helps search books, ebooks, papers, library records, or reading archives.
ester.ee
Shared catalogue of the largest libraries of Estonia.
fviewer.com
Online Cloud File Viewer helps search books, ebooks, papers, library records, or reading archives.
oaji.net
Database of open-access scientific journals.
oalib.com
Open Access Library helps search books, ebooks, papers, library records, or reading archives.
openalex.org
Open Alex helps search books, ebooks, papers, library records, or reading archives.
openknowledgemaps.org
Open Knowledge Maps helps search books, ebooks, papers, library records, or reading archives.
openlibrary.org
Open Library helps search books, ebooks, papers, library records, or reading archives.
openmedialibrary.com
Open Media Library helps search books, ebooks, papers, library records, or reading archives.
openpaymentsdata.cms.gov
Open Payments helps search books, ebooks, papers, library records, or reading archives.
open-slum.org
Open Slum helps search books, ebooks, papers, library records, or reading archives.
open-slum.pages.dev
Open Slum helps search books, ebooks, papers, library records, or reading archives.
open.umn.edu
Open Textbook Library helps search books, ebooks, papers, library records, or reading archives.
explore.openaire.eu
OpenAire helps search books, ebooks, papers, library records, or reading archives.