Google Books API alternatives

Learn to use the Google Books API so your app can search text and retrieve book information. If it doesn't fit your project, here are the 10 best free Books APIs to use instead in 2026, out of 25 in the directory.

For reference, Google Books API: HTTPS.

1. 1

   Greenlit Books API

   Online · 1178 ms

   Catalog of practical AI books with search, series, glossary and a claim ledger.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
2. 2

   KDP Intelligence API

   Online · 1181 ms

   KDP niche demand scores, competition analysis and revenue estimates.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
3. 3

   PoetryDB API

   Online · 623 ms

   Enables you to get instant data from our vast poetry collection.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
4. 4R

   Runyankole Bible API

   Online · 1069 ms

   Free REST API for the Runyankore-Rukiga Bible — 66 books, 31106 verses.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
5. 5T

   Thirukkural API

   Online · 814 ms

   1330 Thirukkural poems and explanation in Tamil and English.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
6. 6

   Wizard World API

   Online · 1084 ms

   Get information from the Harry Potter universe.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
7. 7

   BookRank API

   Online · 1311 ms

   Book rankings from open reader ratings: books, series, reading orders and authors.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
8. 8

   Crossref Metadata Search API

   Online · 755 ms

   Documentation for Crossref's REST API.

   • No API key needed
   • HTTPS

   No authHTTPSCORS ?
9. 9

   Penguin Publishing API

   Online · 2410 ms

   Books, book covers and related data.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
10. 10

    Quran API

    Online · 2855 ms

    RESTful Quran API with multiple languages.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS

Google Books API vs alternatives

Google Books API compared with its alternatives

API	API key	HTTPS	CORS	Uptime	Response	Rating
Google Books	OAuth	Yes	Unknown	Up	564 ms	Not rated
Greenlit Books	No	Yes	Yes	Up	1178 ms	Not rated
KDP Intelligence	No	Yes	Yes	Up	1181 ms	Not rated
PoetryDB	No	Yes	Yes	Up	623 ms	Not rated
RRunyankole Bible	No	Yes	Yes	Up	1069 ms	Not rated
TThirukkural	No	Yes	Yes	Up	814 ms	Not rated
Wizard World	No	Yes	Yes	Up	1084 ms	Not rated
BookRank	No	Yes	Yes	Up	1311 ms	Not rated
Crossref Metadata Search	No	Yes	Unknown	Up	755 ms	Not rated

See also: best Books APIs · all Books APIs