How many companies use Varnish?

TechLeads currently detects Varnish on 589,239 websites. HTTP Archive's monthly crawl, a separate dataset, detected it on 941,141 pages in September 2026.

Who are Varnish's biggest competitors?

By number of websites, the largest Caching technologies besides Varnish are LiteSpeed Cache (1,303,912), WP Rocket (1,274,879), WordPress Super Cache (220,085), W3 Total Cache (205,891), Redis Object Cache (183,332).

Which companies use Varnish?

Websites using Varnish include issuu.com, time.com, arxiv.org, foursquare.com, apache.org, slate.com. The full list of 589,239 websites can be exported as a CSV for $29.

Varnish market share and customers

As of October 8, 2026, Varnish is used by 589,239 websites in the TechLeads index: 14.6% of all Caching detections, the 3rd most-used of 17 Caching technologies.

589,239

websites using Varnish

14.6%

share of Caching

of 17 in Caching

Cite this data

Quoting these numbers? Credit TechLeads with a link to this page.

Citation

TechLeads. "Varnish Customers and Market Share." Data as of October 8, 2026. https://techleads.fyi/technology/varnish/market-share

HTML link

<a href="https://techleads.fyi/technology/varnish/market-share">Varnish market share (TechLeads data)</a>

Varnish vs competitors in Caching

Websites using each technology in the TechLeads index, and its share of all Caching detections.

#	Technology	Websites	Share
1	LiteSpeed Cache	1,303,912	32.3%
2	WP Rocket	1,274,879	31.5%
3	Varnish	589,239	14.6%
4	WordPress Super Cache	220,085	5.4%
5	W3 Total Cache	205,891	5.1%
6	Redis Object Cache	183,332	4.5%
7	Endurance Page Cache

Varnish usage over time

In HTTP Archive's monthly crawl of public websites, Varnish was detected on 941,141 pages in September 2026, down 12.2% from a year earlier (peak: 1,297,786). Among the 1,000 most-visited sites, it appeared on 146. HTTP Archive is a separate dataset from the TechLeads index, so its numbers are not added to ours.

Same month, other Caching technologies in HTTP Archive: Litespeed Cache 2,152,515, WP Rocket 1,484,640, WordPress Super Cache 494,937, W3 Total Cache 485,040, Redis Object Cache 310,657.

Varnish customers by country

Based on country-code domains (such as .de or .co.uk); websites on .com and other generic domains are not assigned a country.

US4,334
GB1,062
DE831
FR760
IT571
CA277
AU221
NO204
BE190
NL175

Companies using Varnish

issuu.com
time.com · Time
arxiv.org
foursquare.com · Foursquare
apache.org
slate.com
xkcd.com
technorati.com · Technorati
owasp.org
scratchjr.org
mastodon.social
globalwellnessinstitute.org · Global Wellness Institute

See all 589,239 websites using Varnish or download the full list as a CSV for $29.

How these numbers are calculated

TechLeads scans public websites and detects Varnish from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is Varnish's website count divided by the website counts of all Caching technologies we track; a site using two Caching tools counts for both. Counts were last refreshed on October 8, 2026 and update daily.

FAQ

Varnish accounts for 14.6% of Caching detections in the TechLeads index (589,239 websites), which makes it the 3rd most-used of 17 Caching technologies we track.