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Gutendex on new websites

Public JSON API for Project Gutenberg metadata.

Sites using Gutendex
3
since Apr 2026
Last 30 days
0.0%
of new sites, to Oct 19
no change on the 30 days before
Last 7 days
0.0%
of new sites, 7-day average
no change on the week before
Rank in Data API
#512
of 1510 tools, all time
First seen Apr 23, 2026
Last seen Sep 14, 2026

What we found

  1. Gutendex did not appear on any new site in the last 30 days.[1]

Share of new sites using Gutendex

0.0000% 0.0002% 0.0004% 0.0006% 10 Sep Oct

The line is the 7-day average share of new sites that use Gutendex, since 10 September.

Data API on new sites

# Movement Tool Share of all sites Share of category Bar
1 – LocalLogic 0.1% 22.9%
2 ▼1 The Movie Database <0.1% 6.7%
3 ▲1 Daum Postcode <0.1% 5.4%
4 ▼1 ViaCEP <0.1% 3.5%
5 ▼1 Frankfurter <0.1% 3.2%
…
512 Gutendex <0.1% <0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Data API tool. All 1510 in Data API

Recently launched products built on Gutendex

2 of the 3 sites using Gutendex are product launches we list individually. The other 1 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site Found Also detected
Rot Reader — speed read anything, one word at a time rotreads.com · Productivity Sep 14 Netlify NS1
MimicReader.ai mimicreader.ai · AI · United Kingdom Apr 23 Amazon SES Cloudflare Google Fonts Google OAuth

Watches, exports and the API give you all 3 sites using Gutendex, from £15 a month.

Notes

  1. These figures cover websites that went live since April 2026, not the web as a whole.

How this page is made

FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards Gutendex when we detect Gutendex on it at that look.

Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.