Companies Using Docusaurus

I analysed Docusaurus against our September 2026 crawl. We find it on 6,427 domains, and 3,685 of them match a company record. It is a clean detection, because Docusaurus announces itself: a generator meta tag, docusaurus_locale and docusaurus_tag meta tags, and a docusaurus object in the page's JavaScript. In a browser check of 60 random detected domains, 59 loaded and 58 carried those markers. The other matched only on a search setting that Algolia's InstantSearch library also creates, so that clause adds roughly 1.7% of noise. How the different signal types work is covered in our guide to technology detection methods.

It lives on the docs subdomain

Docusaurus rarely runs a company's main website. 45.1% of detections are on a docs. host, help., developer., developers. and doc. hosts take another 9.1%, and 29.2% sit on a bare domain, often a project whose whole site is its documentation. The named list reads like a directory of API references: docs.instacart.com, api.slack.com, developers.payu.com, developer.sailpoint.com, docs.getdbt.com, docs.mapbox.com.

That changes how to read the rest of the page. Our stack overlap is measured per domain, so a docs site and the company's marketing site share one row. That is why Next.js appears on 26.35% of these domains and HubSpot on 14.13%: those mostly describe the marketing site next door, not the docs.

Sales signal: the person who owns a Docusaurus site is a developer-relations or documentation lead, not the web team. Address outreach to the docs host, and expect a different stack there than on the homepage.

Software vendors documenting their own product

Software Development is 34.52% of matched companies, Technology, Information and Internet 14.33% and IT Services 12.5%. With the separate Information Technology & Services label, those rows reach 64.2%. Financial Services is next at 6.46%, and the names explain it: PayU, EBANX, Nium, Crypto.com and Click in Uzbekistan all publish payment or exchange APIs on Docusaurus. Blockchain Services adds 2.41%, and Consensys, which LinkedIn files under software, documents its Web3Signer node software on docs.web3signer.consensys.io.

The base is young and mostly small. 44.88% of matched companies with a founding year started in the 2020s and 43.31% in the 2010s, and 53.94% of those with a known size employ 1 to 10 people. Large companies run it as well, usually for a single developer portal: Rippling, SailPoint, Carta and Instacart all do.

"When a company puts its API reference on Docusaurus, it is telling you that engineers are its customers. That makes this page a list of software vendors whose product other developers build on." - David Thomson, CTO at TechnologyChecker.io

Sales signal: this is a list of API-first and developer-tool companies. If you sell developer-experience, API tooling, docs analytics or AI search over documentation, filter on Software Development and Financial Services and start with the docs. and developer. hosts.

The growth line is our coverage

The usage chart climbs from 2,774 domains in June to 6,427 in September. Read it as coverage. 48% of today's Docusaurus domains were first detected in August or September, when our crawl began reaching more docs. and developer. subdomains, and the set of domains we crawl also turns over each month as dead sites drop out and new ones are added. Docusaurus sites were not appearing that fast; we started seeing more of the ones that already existed.

Churn is low. 228 domains have dropped Docusaurus since we began tracking in March 2026, and the detections that remain are steady from one crawl to the next. A docs site gets rebuilt often and re-platformed rarely.

Sales signal: treat this as an installed base, not a trend. The 6,427 figure is the one to plan against.

The category rank needs a footnote

Docusaurus ranks 4th in our Documentation & Knowledge Base table with 3.49%. The rows above it are not bigger documentation tools. Zendesk leads on 113,696 domains, but that count is read mostly from a DNS record Zendesk customers publish to send email, not from help-centre pages. Foxit is second on 9,222, and it makes PDF software. MediaWiki is third on 6,428, one domain ahead of Docusaurus, with GitBook (6,301) and Postman API Documentation (6,272) right behind.

So among tools that render a documentation site, Docusaurus is in a three-way tie with MediaWiki and GitBook. The rivals developers compare it with, MkDocs, VitePress, Starlight, Nextra and Mintlify, have no profile on this site yet, and the switching we can see is tiny: 10 domains moved from GitBook to Docusaurus since March and 5 went the other way.

"Docusaurus and GitBook are within 126 domains of each other in our crawl. The difference between them is who writes the docs: engineers working in Git, or anyone working in a hosted editor." - David Thomson, CTO at TechnologyChecker.io

Sales signal: quote the domain count and leave the rank out. For a hosted docs vendor, this list is a pool of teams that chose to maintain their own build, and that choice is the objection to prepare for.

What sits around a Docusaurus site

Algolia DocSearch appears on 21.81% of live Docusaurus domains, and the dependence runs both ways: about a third of every DocSearch site we detect is a Docusaurus site. Docusaurus ships a DocSearch integration, and Algolia runs DocSearch free for qualifying documentation. Hosting follows the static build: AWS on 22.87%, GitHub Pages on 19.37%, Vercel on 16.86% and Netlify on 8.48%. Analytics is mostly Google Analytics (60.67%), with privacy-first tools such as Plausible (4.35%) and Umami (2.07%) behind it.

Sales signal: search is the crowded slot, with DocSearch on a fifth of these sites. Pitch the rest of the docs workflow instead: reader feedback, docs analytics and AI answers over the documentation.

Version 4 is the next migration

In our browser sample most sites run version 3, 3.10 is the most common release, and a tail is still on version 2. Docusaurus 3.10, released April 7, 2026, is the last 3.x release, and version 4 is in preparation. The previous major upgrade was not trivial: the 3.0 announcement named the move from MDX 1 to MDX 3 as the main challenge of adopting it.

Sales signal: the version 2 tail and the coming version 4 both create upgrade work. Documentation agencies and contractors have a defined list to work from here.

Key takeaways

1. 6,427 domains and 3,685 companies, with 58 of 59 sampled sites carrying Docusaurus's own markers.

2. 45.1% of detections are docs. hosts, so read the host column before the brand.

3. 64.2% of matched companies are in software and IT, and 88.19% were founded in 2010 or later.

4. Level with MediaWiki and GitBook among documentation tools; the 4th place sits under Zendesk and Foxit rows that measure something else.

5. DocSearch runs on 21.81%, and about a third of all DocSearch sites are Docusaurus sites.

How to use this list

Filter on Software Development, Technology, Information and Internet, IT Services and Financial Services, then work from the detection host: docs., developer. and api. addresses identify the documentation team. Vendors selling into documentation can pair the Docusaurus list with the DocSearch column to separate sites that already run hosted search from those that do not.

For the full list of 6,427 Docusaurus domains with company, size and stack data, explore TechnologyChecker.io.