Does NextAuth Have Open Source?
By ToolVS Research Team ยท Last checked April 1, 2026
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YES
Yes, NextAuth.js / Auth.js is fully open source under the ISC license with an active community of contributors.
What We Found
We checked this in April 2026 and here's what we found โ NextAuth.js is open source on GitHub with thousands of stars and active maintenance. The ISC license is permissive for commercial use. The community contributes providers, adapters, and documentation. Auth.js extends support beyond Next.js to SvelteKit, Express, and more.
Things to Know
- โ ๏ธ Community-maintained (no enterprise support SLA)
- โ ๏ธ Some adapters less maintained than others
- โ ๏ธ Breaking changes between major versions
Try NextAuth Yourself
See if open source meets your needs. Most tools offer a free trial or free plan to get started.
Try NextAuthFree โMore About NextAuth
Frequently Asked Questions
Does NextAuth have open source on mobile?
NextAuth offers open source across platforms including mobile. However, the mobile experience may have some limitations compared to the desktop version. Check the mobile app for the latest capabilities.
Is open source available on NextAuth's free plan?
Open Source is available in NextAuth, though specific plan requirements may apply. Some features are limited to paid tiers. Check NextAuth's pricing page for the most current plan details.
What are the best alternatives to NextAuth for open source?
NextAuth already supports open source. You can explore our comparison pages to find tools that best match your requirements.
About this check: We verify feature availability by reviewing official documentation, testing the product directly, and monitoring changelog updates. Information was last verified on April 1, 2026. Features and pricing may have changed since our last check.Our methodology โ