⚡ 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, Microsoft, and Discord.

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

According to our statistics, authentication services are detected on 0.6% of websites from Denmark.

⭐ 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 22.6%, followed by Keycloak with 18% and Auth0 with 16.5%.

Google Identity 22.6%
Keycloak 18%
Auth0 16.5%
Google Sign-In 12.8%
Facebook Login 11.3%
Sign In with Apple 7.5%
Auth.js 6%
Microsoft Identity Platform 5.3%
Amazon Cognito 3%
Microsoft Entra ID 3%
Supabase 3%
Firebase Authentication 2.3%
Okta 0.8%

🚀 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 ^(-7)
3. Auth0 ^(-1)
7. Auth.js ^(-7)
10. Microsoft Entra ID ^(-3)

✨ Best Authentication Services

Below is a more detailed list of 13 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	22.6%
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	18%
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	16.5%
4	Google Sign-In Mountain View, California, United States A deprecated JavaScript library that has been superseded by Google Identity Services for Web. FreeLegacy	12.8%
5	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	11.3%
6	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	7.5%
7	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	6%
8	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	5.3%
9	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$$$	3%
10	Microsoft Entra ID Redmond, Washington, United States A cloud-based identity and access management solution. Free$6+/user/month	3%
11	Supabase Singapore An open-source backend-as-a-service platform based on PostgreSQL. FreeOpen source$25+/month	3%
12	Firebase Authentication Mountain View, California, United States A backend authentication service that enables applications to sign in users using email and password, third-party identity providers, email links, and phone numbers. Free tier$$$	2.3%
13	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	0.8%

👉 See Also

🌎 Authentication in other countries

Data is based on the analysis of 23,478 websites from Denmark.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.