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Varnish

Varnish in each crawled group, and in the wider sample. Hosting and CDN.

GroupCrawledRunning VarnishShare
Inc 5000 (2026) 4,886 62 1.3%
Y Combinator companies 5,386 106 2.0%
Fortune 500 472 41 8.7%
Unicorns 1,000 44 4.4%
SaaS companies 8,173 310 3.8%
Tranco top 10,000 1,572 146 9.3%
Wider sample 8,291 128 1.5%

Group rows come from rendered homepage crawls; the wider sample is a plain fetch, so it undercounts tools a tag manager injects after the page loads. <5 means fewer than 5 crawled domains in that group. Method · Hosting and CDN across all groups · Response passing through a Varnish cache, identified by its via and id headers.

Detected by: header via: varnish header via: Varnish

Wider sample

Varnish was detected on 128 of 8,291 company websites drawn from Crunchbase company records, companies with 11 to 1,000 employees. The cuts below divide by each segment's own crawled base.

By industry

IndustryCrawledRunning VarnishShare
Artificial Intelligence (AI) 1,631 21 1.3%
Financial Services 548 5 0.9%
Biotechnology 521 3 0.6%
Information Technology 503 9 1.8%
Health Care 420 3 0.7%
Apps 395 2 0.5%
Data and Analytics 373 13 3.5%
Commerce and Shopping 347 6 1.7%
Administrative Services 344 4 1.2%
Energy 294 2 0.7%

By employee size band

Size bandCrawledRunning VarnishShare
11-50 6,249 78 1.2%
51-200 2,042 50 2.4%

By country

CountryCrawledRunning VarnishShare
United States 5,475 98 1.8%
United Kingdom 803 13 1.6%
Canada 480 4 0.8%
Germany 430 0 0.0%
France 422 9 2.1%
Australia 212 1 0.5%
Netherlands 146 1 0.7%
Sweden 84 0 0.0%
Denmark 75 1 1.3%
Finland 68 1 1.5%

Cite this

Installmap, Varnish adoption, crawl of 2026-09-03, https://installmap.com/tools/varnish.

Canonical URL
https://installmap.com/tools/varnish
Denominator
128 of 8,291 crawled company websites in the wider sample, a share of 1.5%

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