Clerk
User auth and sign-in UI, unlimited apps, 50,000 monthly retained users per app.
Card: noneDev Tools
What you get
Unlimited apps, 50,000 MRU per app, up to 3 dashboard seats.
How to get it
Start building for free at clerk.com.
What it requires
No credit card required.
The catch
Not stated by vendor
From the official page ยท checked 2026-10-14