What is the best alternative to Clerk?

By number of websites, the most widely used alternatives to Clerk are Firebase Auth, Okta, Auth0. The right one depends on your needs; compare them on adoption, authority, and audience above.

How many alternatives to Clerk are there?

Site Stats Database tracks 3 other authentication & identity platforms used by 100 or more websites, plus a long tail of rarer ones. Clerk itself is used by 333 websites.

Which authentication / identity platform has the most websites?

Firebase Auth leads this category with 371 websites in our catalog.

Where does this data come from?

Adoption is counted from Site Stats Database's own crawl; authority (Ahrefs Domain Rating) and traffic come from Ahrefs and DataForSEO. Everything reflects the sites we track and refreshes at least monthly.

Clerk Alternatives & Competitors

Last updated July 1, 2026 · refreshes automatically as new data lands.

Looking for an alternative to Clerk? Site Stats Database tracks 3 other authentication & identity platforms; the top ones are below, ranked by adoption, with authority and traffic for each and the leading sites that use them. Clerk itself is used by 333 websites. Back to Clerk.

Authentication	Websites	Share	Median DR	Median traffic	Compare
Clerk (this page)

Clerk Alternatives & Competitors

The top Clerk alternatives in depth

Firebase Auth

Okta

Auth0

FAQ

Cite this page

Research the full Authentication landscape