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Authorizer

Open source authentication and authorization solution

★★★★★ 4.8/5
FactScore™ 33.2
VS

Clerk

An authentication and user management platform

★★★★★ 5.0/5
FactScore™ 94.3

Updated February 2026

Authorizer Clerk
Rating 4.8★ 5.0★
Reviews 4 76
Pros 0 19
FactScore™ 33.2 94.3

FactScore™ Comparison

FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.

33.2
Authorizer FactScore™
👑
94.3
Clerk FactScore™
★ Clerk wins on FactScore™

Pros & Cons

Only in Authorizer — Pros

No unique pros listed

Both tools — Pros

—

Only in Clerk — Pros

Easy integration Comprehensive solution Free tier Fast setup Flexible auth Prebuilt UI components Developer APIs Secure login flows Beautiful components Generous free tier OAuth support Admin dashboard B2B use cases Customer support Excellent documentation Next.js integration Seamless integration Social logins Web 3.0 integration

Only in Authorizer — Cons

—

Both tools — Cons

—

Only in Clerk — Cons

Native-app hiccups

Details

Authorizer Clerk
Categories Authentication & identity tools Authentication & identity tools
Platforms Web Web
Became Popular December 5, 2021 April 22, 2021
Website authorizer.dev go.clerk.com

Who Should Pick Which?

Choose Authorizer if...

  • No unique pros listed

Choose Clerk if...

  • Easy integration
  • Comprehensive solution
  • Free tier

With a FactScore™ of 33.2 vs 94.3, Clerk leads in community reception. Authorizer uniquely offers No unique pros listed, while Clerk stands out for Easy integration and Comprehensive solution.

3

What Users Say

Authorizer

No reviews yet

Clerk

F
Fiona Aug 20, 2024
★★★★★

We initially began building user management in-house but quickly realized that creating a secure and seamless user experience involved more complexity than anticipated. It was clear that continuing...

A
Aswin Feb 14, 2025
★★★★★

Clerk makes authentication effortless, with a developer-friendly API and prebuilt UI components that save time. Unlike Auth0 or Firebase Auth, Clerk provides first-class support for modern framewor...

A
Alexis Feb 10, 2026
★★★★★

We needed production-ready authentication without slowing the team down. Clerk let us ship securely from day one and stay focused on core product work. Setup was fast, UX is polished out of the box...

Frequently Asked Questions

Which is better, Authorizer or Clerk?

Based on FactScore™, Clerk leads with a score of 94.3 vs 33.2. Clerk has a higher rating of 5.0★ compared to 4.8★.

What are the pros of Authorizer compared to Clerk?

Authorizer uniquely offers: No unique pros listed.

What are the pros of Clerk compared to Authorizer?

Clerk uniquely offers: Easy integration, Comprehensive solution, Free tier, Fast setup, Flexible auth.

Is Authorizer better rated than Clerk?

Authorizer is rated 4.8★ from 4 reviews. Clerk is rated 5.0★ from 76 reviews.

What is the FactScore™ of Authorizer and Clerk?

FactScore™ weighs rating and review volume together. Authorizer scores 33.2 and Clerk scores 94.3.

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