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AuthJS vs Stack Auth
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Price
Free
Authentication & Identity
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Free
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Authentication & Identity
Overview
Focus
Authentication & Identity
Authentication & Identity
Product
Open-source authentication library for web apps supporting NextAuth, SvelteKit, and SolidStart frameworks.
Stack Auth is an open-source authentication platform for modern web applications with support for organizations, roles, and hosted auth workflows.
Headquarters
Worldwide
San Francisco, California
Company size
2-10 employees
2-10 employees
Founded
2017
2024
Pricing details
Published rate
Free
Free options
Free plan
Free plan, Free trial
Source updated
Oct 29, 2026
Oct 29, 2026