How many companies use C?

TechLeads currently detects C on 11,646 websites. HTTP Archive's monthly crawl, a separate dataset, detected it on 12,793 pages in September 2026.

Who are C's biggest competitors?

By number of websites, the largest Programming languages technologies besides C are PHP (13,444,051), Node.js (1,465,709), Java (706,134), TypeScript (455,651), Python (379,890).

Which companies use C?

Websites using C include khabaronline.ir, yoomoney.ru, lowreal.net, tawasal.ae, melbetegypt.com, lindafrietman.com. The full list of 11,646 websites can be exported as a CSV for $29.

C market share and customers

As of October 8, 2026, C is used by 11,646 websites in the TechLeads index: 0.07% of all Programming languages detections, the 13th most-used of 27 Programming languages technologies.

11,646

websites using C

0.07%

share of Programming languages

#13

of 27 in Programming languages

Cite this data

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

Citation

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

HTML link

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

C vs competitors in Programming languages

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

#	Technology	Websites	Share
1	PHP	13,444,051	78.9%
2	Node.js	1,465,709	8.6%
3	Java	706,134	4.1%
4	TypeScript	455,651	2.7%
5	Python	379,890	2.2%
6	Ruby	330,909	1.9%
7	GraphQL	97,962	0.58%

C usage over time

In HTTP Archive's monthly crawl of public websites, C was detected on 12,793 pages in September 2026, down 17.7% from a year earlier (peak: 14,298,743). Among the 1,000 most-visited sites, it appeared on 8. HTTP Archive is a separate dataset from the TechLeads index, so its numbers are not added to ours.

Same month, other Programming Languages technologies in HTTP Archive: PHP 24,737,328, Node.js 3,181,312, Java 1,381,600, TypeScript 903,768, Ruby 689,968.

C 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.

RU46
IT5
US5
DE4
BR2
IR2
GB1
ZA1
NL1
CA1

Companies using C

khabaronline.ir · خبرآنلاین
yoomoney.ru
lowreal.net
tawasal.ae
melbetegypt.com
lindafrietman.com · www.lindafrietman.nl
otagopackaging.co.nz · Otago Packaging Supplies
durfwatanders.nl · Graficelly
peter-noordhoek.nl · Peter Noordhoek
studiowebproof.nl · webproof
theater-world.nl · Theaterworld Aalsmeer
visualsteps.be · Visual Steps

See all 11,646 websites using C or download the full list as a CSV for $29.

How these numbers are calculated

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

FAQ

C accounts for 0.07% of Programming languages detections in the TechLeads index (11,646 websites), which makes it the 13th most-used of 27 Programming languages technologies we track.