🆚 Auth.js vs. Keycloak
- 📈 Keycloak is twice as popular as Auth.js.
- 🌎 Keycloak is more popular in the United States, Colombia, and Germany.
- 🌎 Auth.js is more popular in Brazil, Japan, and Indonesia.
Auth.js
KeycloakType
About
Auth.js is 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.
It supports OAuth 2.0 and 
OpenID Connect providers, passwordless email authentication, and passkeys via WebAuthn, and can manage sessions using 
JSON Web Tokens or database adapters for MySQL, 
PostgreSQL, 
MongoDB, and 
SQLite.
Keycloak is an open-source identity and access management solution that provides user federation, strong authentication, user management, fine-grained authorization, and more.
Headquarters
Pricing
Categories
Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Awards
- ⬆️ 237th most popular in the United States in the JavaScript Libraries category.
- 🥇 Most popular in Colombia in the Authentication category.
- 🥈 Second most popular in Switzerland in the Authentication category.
- 🥈 Second most popular in Denmark in the Authentication category.
- ⭐ 4th most popular in Germany in the Authentication category.
- ⭐ 6th most popular in France in the Authentication category.
Popularity by domain category
Determined by the number of sites in each category.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
Google Identity
Facebook Login
Auth0
Supabase
Clerk🗃️ 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 3,406,701 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.