How many companies use Keycloak?

TechLeads currently detects Keycloak on 30,159 websites.

Who are Keycloak's biggest competitors?

By number of websites, the largest Login technologies besides Keycloak are Facebook Login (1,045,489), Sign In With Google (38,640), Okta (10,715), Clerk UMP (7,416), Microsoft Authentication Library for JavaScript (5,903).

Which companies use Keycloak?

Websites using Keycloak include ataktalk.com, brainy-club.com, chastly.com, napxusieunhanh.com, studentdev1.com, grasscity.co.uk. The full list of 30,159 websites can be exported as a CSV for $29.

Keycloak market share and customers

As of October 8, 2026, Keycloak is used by 30,159 websites in the TechLeads index: 2.6% of all Login detections, the 3rd most-used of 38 Login technologies.

30,159

websites using Keycloak

2.6%

share of Login

of 38 in Login

Cite this data

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

Citation

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

HTML link

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

Keycloak vs competitors in Login

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

#	Technology	Websites	Share
1	Facebook Login	1,045,489	90.3%
2	Sign In With Google	38,640	3.3%
3	Keycloak	30,159	2.6%
4	Okta	10,715	0.93%
5	Clerk UMP	7,416	0.64%
6	Microsoft Authentication Library for JavaScript	5,903	0.51%
7	ClassLink

Keycloak 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.

Companies using Keycloak

ataktalk.com · Cal.com
brainy-club.com · 지독해
chastly.com · Chastly
napxusieunhanh.com · Website mua bán xu TikTok tự động.
studentdev1.com · Cal.diy
grasscity.co.uk · Grasscity EU Prod
joiin.xyz · Joiin
klink-app.jp · Klink
curaai.com.br · CuraAI
modextm.com · Clink AI Internal Gateway
nldb.nl · Nederlands de Baas
reinvestorhub.ai · Rick Sanchez

See all 30,159 websites using Keycloak or download the full list as a CSV for $29.

How these numbers are calculated

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

FAQ

Keycloak accounts for 2.6% of Login detections in the TechLeads index (30,159 websites), which makes it the 3rd most-used of 38 Login technologies we track.