Last updated · 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) |
| 333 |
| 23.1% |
| 27 |
| 4,682 |
| - |
| Firebase Auth | 371 | 25.8% | 34 | 4,020 | Clerk vs Firebase Auth |
| Okta | 315 | 21.9% | 71 | 13,666 | Clerk vs Okta |
| Auth0 | 284 | 19.7% | 62 | 16,822 | Clerk vs Auth0 |
371
Websites
25.8%
Share of Authentication
34
Median DR
4,020
Median traffic
Top sites using Firebase Auth
315
Websites
21.9%
Share of Authentication
71
Median DR
13,666
Median traffic
Top sites using Okta
284
Websites
19.7%
Share of Authentication
62
Median DR
16,822
Median traffic
Top sites using Auth0
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.
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.
Firebase Auth leads this category with 371 websites in our catalog.
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.
Citation
Site Stats Database. "Clerk Alternatives & Competitors." Site Stats Database, July 1, 2026. https://sitestatsdb.com/technologies/authentication/clerk/alternatives
Site Stats Database tracks every authentication / identity platform with full monthly traffic history, authority, keywords, referring domains, and the complete detected tech stack. Filter, compare, and export the data.
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