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Clerk vs Stack Auth

Reviewed byRoman K
Tagline
Clerk: Authentication and user management
Stack Auth: Open source Clerk alternative
Pricing Model
Clerk: freemium
Stack Auth: open-source
Starting Price
Clerk: $25/mo
Stack Auth: $0/mo
Free Plan
Clerk: Yes
Stack Auth: Yes
GitHub Stars
Clerk: 1.7k
Stack Auth: 6.8k
npm Downloads/wk
Clerk: 1.5M
Stack Auth: 45.0k
GitHub Forks
Clerk: 460
Stack Auth: 340
Open Issues
Clerk: 96
Stack Auth: 78
Tags
Clerk: auth, sso, mfa, react
Stack Auth: auth, open-source, self-hosted, user-management

Clerk vs Stack Auth: which to choose

Stack Auth has the larger community with 6.8k GitHub stars against 1.7k for Clerk, which usually means more integrations, examples and third-party help when you get stuck.

Both charge from day one, but Stack Auth starts lower at $0/mo versus $25/mo for Clerk.

Choose Clerk if you lean toward auth and sso; choose Stack Auth if auth and open-source matters more for your stack. All figures above are pulled from live GitHub and pricing data, not vendor marketing.

Frequently asked questions

Is Clerk or Stack Auth better?▾

It depends on your priorities. Clerk has 1.7k GitHub stars and uses a freemium pricing model, while Stack Auth has 6.8k stars and uses a open-source model. Both offer a free plan so you can try each before committing.

Is Clerk cheaper than Stack Auth?▾

Clerk starts at $25/mo while Stack Auth starts at $0/mo. Clerk has a free plan. Stack Auth has a free plan.

What are the main differences between Clerk and Stack Auth?▾

Clerk is tagged as auth, sso, mfa while Stack Auth is tagged as auth, open-source, self-hosted. Clerk uses a freemium pricing model and has a community of 1.7k GitHub stars. Stack Auth uses a open-source model with 6.8k GitHub stars.

Does Clerk or Stack Auth have a free plan?▾

Yes, both Clerk and Stack Auth offer a free plan.

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