How many companies use Google Custom Search?

TechLeads currently detects Google Custom Search on 17,974 websites.

Who are Google Custom Search's biggest competitors?

By number of websites, the largest Site Search technologies besides Google Custom Search are Ajax Search Lite (40,561), Algolia (24,607), Doofinder (15,882), Searchanise (9,481), ElasticSuite (5,800).

Which companies use Google Custom Search?

Websites using Google Custom Search include purdue.edu, imagemagick.org, sjsu.edu, usc.edu, thediplomat.com, umich.edu. The full list of 17,974 websites can be exported as a CSV for $29.

Google Custom Search Market Share and Usage Statistics

As of October 14, 2026, Google Custom Search is used by 17,974 websites in the TechLeads index: 13.4% of all Site Search detections, the 3rd most-used of 36 Site Search technologies.

17,974

websites using Google Custom Search

13.4%

share of Site Search

of 36 in Site Search

Cite this data

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

Citation

TechLeads. "Google Custom Search Customers and Market Share." Data as of October 14, 2026. https://techleads.fyi/technology/google-custom-search/market-share

HTML link

<a href="https://techleads.fyi/technology/google-custom-search/market-share">Google Custom Search market share (TechLeads data)</a>

Google Custom Search vs competitors in Site Search

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

#	Technology	Websites	Share
1	Ajax Search Lite	40,561	30.1%
2	Algolia	24,607	18.3%
3	Google Custom Search	17,974	13.4%
4	Doofinder	15,882	11.8%
5	Searchanise	9,481	7.0%
6	ElasticSuite	5,800	4.3%
7	Boost Commerce	4,340

Google Custom Search 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.

US34
JP4
CA3
IN1
GB1
PT1
GR1
SK1
IT1
CM1

Companies using Google Custom Search

purdue.edu
imagemagick.org · ImageMagick Studio LLC
sjsu.edu
usc.edu
thediplomat.com · The Diplomat
umich.edu
aafa.org
natlawreview.com
ssir.org
houstontx.gov
cyndislist.com
jfa.jp

See all 17,974 websites using Google Custom Search or download the full list as a CSV for $29.

How these numbers are calculated

TechLeads scans public websites and detects Google Custom Search from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is Google Custom Search's website count divided by the website counts of all Site Search technologies we track; a site using two Site Search tools counts for both. Counts were last refreshed on October 14, 2026 and update daily.

FAQ

Google Custom Search accounts for 13.4% of Site Search detections in the TechLeads index (17,974 websites), which makes it the 3rd most-used of 36 Site Search technologies we track.