⚡ Authentication in Denmark

Authentication services enable developers to integrate third-party authentication into their websites and applications, allowing users to sign in with accounts from identity providers such as Google, Facebook, Apple, and Microsoft.

Denmark is a Northern European country with a population of over 5.9 million people.

According to our statistics, authentication services are detected on 0.7% of websites from Denmark.

Statistics based on 25K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top authentication services in Denmark in 2026, based on market share.

The most popular is Google Identity with a share of 23.6%, followed by Keycloak with 14% and Auth0 with 13.5%.

Google Identity 23.6%
Keycloak 14%
Auth0 13.5%
Google Sign-In 11.2%
Supabase 9%
Facebook Login 9%
Microsoft Identity Platform 6.2%
Sign In with Apple 6.2%
Auth.js 4.5%
Microsoft Entra ID 3.9%
Amazon Cognito 2.8%
Okta 1.7%
Firebase Authentication 1.7%
Clerk 1.1%

🚀 Highlights

Here is a list of the top services that are more popular in Denmark than worldwide.
Differences between global and country rankings are shown in parentheses.

2. Keycloak ^(-8)
3. Auth0 ^(-2)
9. Auth.js ^(-5)
10. Microsoft Entra ID ^(-3)
14. Clerk ^(-1)
15. Shibboleth ^(-3)

✨ Best Authentication Services

Below is a more detailed list of 15 authentication services used on sites from Denmark, ranked by their market share.

Rank	Name	Market share
1	Google Identity Mountain View, California, United States A suite of services and APIs from Google that handles user sign-up, sign-in, and authorization across web and mobile apps. Free	23.6%
2	Keycloak San Francisco, California, United States An open-source identity and access management solution that provides user federation, strong authentication, user management, fine-grained authorization, and more. FreeOpen source	14%
3	Auth0 San Francisco, California, United States A cloud-based identity and authentication management platform that allows developers to add authentication to their applications. Free$35+/month	13.5%
4	Google Sign-In Mountain View, California, United States A deprecated JavaScript library that has been superseded by Google Identity services for Web. FreeLegacy	11.2%
5	Supabase Singapore An open-source backend-as-a-service platform based on PostgreSQL. FreeOpen source$25+/month	9%
6	Facebook Login Menlo Park, California, United States A convenient way for Facebook's billions of global users to log into your app or website. Free	9%
7	Microsoft Identity Platform Redmond, Washington, United States A cloud identity service that allows your users and customers to sign in to your applications using their Microsoft identities or social accounts. Free$6+/user/month	6.2%
8	Sign In with Apple Cupertino, California, United States A service provided by Apple that allows users to sign in to apps and websites using their Apple IDs. $99/year	6.2%
9	Auth.js San Francisco, California, United States An open-source authentication solution that integrates with Next.js, Nuxt, Qwik, and other modern JavaScript frameworks to handle user sign-in, session management, and access control. FreeOpen source	4.5%
10	Microsoft Entra ID Redmond, Washington, United States A cloud-based identity and access management solution. Free$6+/user/month	3.9%
11	Amazon Cognito Seattle, Washington, United States A user identity service by Amazon Web Services that lets you add user sign-up, sign-in, and access control to your web and mobile apps. Free tier$$$	2.8%
12	Okta San Francisco, California, United States A cloud-based identity and access management platform built around a centralized directory of user and customer profiles. $1,500+/year	1.7%
13	Firebase Authentication Mountain View, California, United States A backend authentication service that enables applications to sign in users using email and password, third-party identity providers, email links, and phone numbers. Free tier$$$	1.7%
14	Clerk San Francisco, California, United States An authentication and user management service for Next.js, Remix, Nuxt, React, Vue, and other frameworks that provides prebuilt interfaces and APIs to handle user identity, sessions, and access control. Free$25+/month	1.1%
15	Shibboleth Bristol, United Kingdom A SAML-based single sign-on web application that is widely used in academic organizations. FreeOpen source€2,750+/year	0.6%

👉 See Also

🌎 Authentication in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 25,948 websites from Denmark.
We currently track the presence of 20 authentication services across the web.
Of these, 15 were detected on websites from Denmark.
Statistics were last calculated on August 24, 2026.
For more details, see our methodology and disclaimer.