🆚 Clerk vs. Keycloak

Compare technologies based on real-world usage data *

📈 Keycloak is five times more popular than Clerk.
🌍 Keycloak is more popular in all countries.

Clerk

Keycloak

Type

Authentication service

About

Clerk is an authentication and user management service for Next.js, Remix, Nuxt, React, Vue, and other frameworks.

Keycloak is an open-source identity and access management solution that provides user federation, strong authentication, user management, fine-grained authorization, and more.

Headquarters

San Francisco, California, United States

Website

clerk.com #60,139

keycloak.org #48,832

Pricing

Free version ✔️10K monthly active users (MAUs)

Pro$25+/month

Free ✔️Open source

Popularity

Determined by the number of sites using each technology.

The Keycloak authentication service is 5 times more popular than Clerk.

Total websites

Market share

Authentication

Popularity by country

Determined by the number of sites detected from each country.

Keycloak is more popular than Clerk in all countries.

United States

Colombia

Germany

France

Switzerland

Russia

Austria

Denmark

United Kingdom

Italy

Awards

🔥 17th most popular in the United States in the Authentication category.

🥇 Most popular in Colombia in the Authentication category.
🥉 Third most popular in Switzerland in the Authentication category.
⭐ 5th most popular in Germany in the Authentication category.
⭐ 5th most popular in France in the Authentication category.

Popularity by domain category

Determined by the number of sites in each category.

Keycloak is more popular than Clerk in all market segments.

Business

Marketing/Merchandising

General News

Real Estate

Internet Services

Sports

Finance/Banking

Software/Hardware

Education/Reference

Online Shopping

Top sites

Top-ranked sites that use these technologies.

Name

Rank

#273

#9,487

#21,861

#53,080

#60,139

Name

Rank

#2,319

#5,365

#5,995

#6,280

#6,821

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