What is the best alternative to Auth0?

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

How many alternatives to Auth0 are there?

Site Stats Database tracks 3 other authentication & identity platforms used by 100 or more websites, plus a long tail of rarer ones. Auth0 itself is used by 284 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.

Auth0 Alternatives & Competitors

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

Looking for an alternative to Auth0? 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. Auth0 itself is used by 284 websites. Back to Auth0.

Authentication	Websites	Share	Median DR	Median traffic	Compare
Auth0 (this page)

Auth0 Alternatives & Competitors

The top Auth0 alternatives in depth

Firebase Auth

Clerk

Okta

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