Browse indexable science and education x402 offerings, including provider, method, and service details.
1729 indexable offerings in this category.
Free public-domain books on "Canada": browse the catalogue's works tagged with that Library of Congress subject (434 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Everything free by an author: all catalogued public-domain books, audiobooks and films for an author name across Gutenberg, LibriVox and Internet Archive, grouped by kind with download links. Handles 'Jane Austen' or 'Austen, Jane'. $0.01 per author.
Free public-domain books on "Family": browse the catalogue's works tagged with that Library of Congress subject (200 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Egypt": browse the catalogue's works tagged with that Library of Congress subject (339 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "India": browse the catalogue's works tagged with that Library of Congress subject (378 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Japan": browse the catalogue's works tagged with that Library of Congress subject (210 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Drama": browse the catalogue's works tagged with that Library of Congress subject (214 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Jews": browse the catalogue's works tagged with that Library of Congress subject (226 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Clergy": browse the catalogue's works tagged with that Library of Congress subject (241 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Essays": browse the catalogue's works tagged with that Library of Congress subject (243 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Europe": browse the catalogue's works tagged with that Library of Congress subject (419 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Dogs": browse the catalogue's works tagged with that Library of Congress subject (232 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Married people": browse the catalogue's works tagged with that Library of Congress subject (211 in Project Gutenberg alone, plus Internet Archive scans), ranked by releva…
Free public-domain books on "Murder": browse the catalogue's works tagged with that Library of Congress subject (305 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "France": browse the catalogue's works tagged with that Library of Congress subject (1,660 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Birds": browse the catalogue's works tagged with that Library of Congress subject (406 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "China": browse the catalogue's works tagged with that Library of Congress subject (334 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Girls": browse the catalogue's works tagged with that Library of Congress subject (559 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Italy": browse the catalogue's works tagged with that Library of Congress subject (508 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Free public-domain books on "Boys": browse the catalogue's works tagged with that Library of Congress subject (533 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.
Resolves an ISBN-10 or ISBN-13 to a normalized bibliographic record from Open Library (Internet Archive): title, authors, publishers, publish date, page count, ISBN identifiers, subjects and cover image URL. Query: ?isbn=9780140328721 (hyphens/spaces tolerated). Unknown ISBNs return 400 (not charged). 7-day cache. Built for catalog management, e-commerce listings and used-book pricing agents.
Parsed reference list (with DOIs/PMIDs where available) of one document
Normalized scholarly metadata + abstract + full rights/attribution for one open-licensed document
Research brief on any topic in one call: the best papers from ISHOB's open-licence archive, filled with a live search of 250M+ scholarly works, each with authors, year, venue, DOI and citations; abstracts only for openly licensed papers (CC0 / public domain / CC BY / CC BY-SA), metadata and link for the rest; plus a short AI synthesis citing the papers as [n]. Checked before payment: if nothing is found anywhere the answer is a free 404 'not_covered'.