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What are the best free online libraries?

A commercial recommendation prompt. We size how many people ask ChatGPT this from real search demand, then run it through ChatGPT to see which websites it recommends.

Est. people asking / mo
1.2K
CPC
$0.55
Total est. value / mo
$42
Common ways people ask this (12)
  • What are the best free online libraries for e-books?
  • What are the best free online libraries for audiobooks?
  • What are the best free online libraries for academic research?
  • What are the best free online libraries for students?
  • What are the best free online libraries for public domain books?
  • What are the best free online libraries for fiction?
  • What are the best free online libraries for non-fiction?
  • What are the best free online libraries for children?
  • What are the best free online libraries for classic literature?
  • What are the best free online libraries for magazines?
  • What are the best free online libraries for newspapers?
  • What are the best free online libraries with no library card required?

What ChatGPT actually answered

One of the 5 times we asked ChatGPT this, verbatim. The leaderboard below aggregates all 5 runs.

Websites ChatGPT recommends for this prompt

Aggregated across 5 runs (min 2/5 appearances). Estimated visits split the prompt's demand by rank. Sites matching the prompt's own brand are marked branded and excluded from the leaderboard.

RankWebsiteAppearsEst. visits / moEst. value / mo
1 archive.org 5/5 25 $13
2 openlibrary.org 5/5 15 $8
3 manybooks.net 5/5 10 $5
4 gutenberg.org 4/5 7 $3
5 worldcat.org 5/5 5 $2
6 standardebooks.org 5/5 4 $2
7 books.google.com 5/5 3 $1
8 projectgutenberg.org 5/5 2 $1
9 hathitrust.org 5/5 2 $0
10 pdfdrive.com 5/5 1 $0
11 doabooks.org 4/5 1 $0
12 libgen.is 4/5 1 $0
13 google.com 2/5 1 $0
14 oapen.org 2/5 0 $0
15 scribd.com 3/5 0 $0
16 internetarchive.org 2/5 0 $0
17 read.gov 2/5 0 $0
18 loc.gov 2/5 0 $0
19 openstax.org 2/5 0 $0
20 goodreads.com 2/5 0 $0
How is this estimated?

ChatGPT doesn't publish prompts, so we don't show logged conversations. We measure real demand for this topic from Google search volume, scale it to ChatGPT's user base (on average about 1 ChatGPT user for every 8 Google searchers, a ratio that varies by topic), and run the prompt through ChatGPT 5 times to record which websites it recommends and in what order. Estimated visits split that demand across the recommended sites by a click-through-by-rank curve. Every number is a modeled estimate, not measured analytics. Full methodology →