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Fern on new websites

Developer documentation generator and SDK builder for OpenAPI/REST APIs.

Sites using Fern
5
since Apr 2026
Last 30 days
0.0%
of new sites, to Oct 21
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 Documentation
#13
of 32 tools, all time
In our data since Apr 2026
Last seen Sep 6, 2026

What we found

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

Share of new sites using Fern

0.0000% 0.0001% 0.0001% 0.0002% 0.0002% 10 Sep Oct

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

Documentation on new sites

# Movement Tool Share of all sites Share of category Bar
1 – Starlight <0.1% 66.7%
2 – Mintlify <0.1% 11.9%
3 – mdBook <0.1% 4.6%
4 – Redocly <0.1% 3.4%
5 ▲2 MDN Web Docs <0.1% 1.9%
…
13 ▲3 Fern <0.1% 0.4%

All-time shares across the new sites we track: of all of them, and of the sites using any Documentation tool. Among September launches it ranked #10 in Documentation, up from #13 in August. All 32 in Documentation

Recently launched products built on Fern

4 of the 5 sites using Fern 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
NVIDIA Personal AI Router nvidia.com · AI Sep 6 jQuery Adobe Experience Cloud Adobe Experience Manager Adobe Experience Platform Launch
Turn any task into the right API calls. | Orbit by Postman buildwithorbit.ai · Developer Tools Aug 22 Next.js React Vercel AWS Route 53
LoreOS | LoreOS docs.loreos.app · AI Aug 5 Next.js React Vercel Lucide Icons
OpenRouter Model Fusion openrouter.ai · Crypto · United States Apr 4 Next.js React Vercel Algolia

Watches, exports and the API give you all 5 sites using Fern, 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 Fern when we detect Fern 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.