Clerk: User auth and management. We've found 992 companies using Clerk, most often in B2B (15%) and Engineering, Product and Design (12%), typically with 1–10 employees and 63% based in United States.
We've found 992 companies using Clerk among the 609,780 we've scanned so far. We only count a company when a direct public record backs it up.
What kind of companies use Clerk?
Clerk customers are most often in B2B (15%), Engineering, Product and Design (12%) and Software (10%). The most common company size is 1–10 employees (48% of customers with a known size).
Which countries use Clerk the most?
Most Clerk customers we've found are in United States (63%), United Kingdom (6%) and Canada (3%).
What are the alternatives to Clerk?
The most used alternatives in the same category are Auth0 (4,969 companies), Microsoft Entra ID (3,039 companies), Okta (1,659 companies) and SAP Customer Data Cloud (735 companies).
How does runsonwhat know a company uses Clerk?
We read public traces only. For Clerk that means a subdomain that points at Clerk, code loaded on the company's website, including tag managers and the company's published subprocessor list. Every match keeps the record it came from.
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