Auth0
Secure access for everyone. But not just anyone.
Stack Auth
Open-source Auth0/Clerk Alternative
Updated February 2026
| Auth0 | Stack Auth | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 13 | 4 |
| Pros | 16 | 0 |
| FactScore™ | 57.3 | 34.9 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Auth0 — Pros
Ease of use Quick onboarding Secure access Easy integration Excellent documentation Personalization Fair pricing for startups Feature-rich product Federated identity management Flexible SSO SAML tooling Granular access control High performance Multifactor authentication Scalable Universal login Uptime reliabilityBoth tools — Pros
—Only in Stack Auth — Pros
No unique pros listedOnly in Auth0 — Cons
—Both tools — Cons
—Only in Stack Auth — Cons
—Details
| Auth0 | Stack Auth | |
|---|---|---|
| Categories | Authentication & identity tools | Authentication & identity tools |
| Platforms | Web | Web |
| Became Popular | September 17, 2014 | August 2, 2024 |
| Website | auth0.com | stack-auth.com |
Who Should Pick Which?
Choose Auth0 if...
- Ease of use
- Quick onboarding
- Secure access
Choose Stack Auth if...
- No unique pros listed
With a FactScore™ of 57.3 vs 34.9, Auth0 leads in community reception. Auth0 uniquely offers Ease of use and Quick onboarding, while Stack Auth stands out for No unique pros listed.
What Users Say
Auth0
Auth0 makes authentication effortless and enterprise-grade at the same time. For Waydev AI, it handles thousands of users and complex role-based access without adding friction to our development fl...
We selected Auth0 as our first IdP partner to release core functionality for our 'Use Ours or BYO Authentication provider' functionality. Thank you Auth0 for building a feature-rich product.
A huge thanks to Auth0 for helping us out with the authentication flow. They were really quick with the onboarding process and even with the support tickets.
Stack Auth
I love Stack for being open source and making it super easy to add auth. Love the team and love the product!
Related Comparisons
Frequently Asked Questions
Which is better, Auth0 or Stack Auth?
Based on FactScore™, Auth0 leads with a score of 57.3 vs 34.9. Auth0 has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Auth0 compared to Stack Auth?
Auth0 uniquely offers: Ease of use, Quick onboarding, Secure access, Easy integration, Excellent documentation.
What are the pros of Stack Auth compared to Auth0?
Stack Auth uniquely offers: No unique pros listed.
Is Auth0 better rated than Stack Auth?
Auth0 is rated 5.0★ from 13 reviews. Stack Auth is rated 5.0★ from 4 reviews.
What is the FactScore™ of Auth0 and Stack Auth?
FactScore™ weighs rating and review volume together. Auth0 scores 57.3 and Stack Auth scores 34.9.
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