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Better Auth

Y Combinator LogoSpring 2025
Active
developer-tools
security
open-source
 
https://better-auth.com/

The most comprehensive authentication framework for TypeScript.

Better Auth is a framework-agnostic authentication solution for TypeScript that lets you implement everything from simple auth flows to enterprise-grade systems directly on your own database, embedded in your backend. We’re obsessed with making it ridiculously easy to roll your own auth, so you never have a reason not to. It’s loved by developers and endorsed by leading voices in the ecosystem. On top of the framework, Better Auth also provides an infrastructure layer for the things that aren’t practical to ship as a library like user management and analytics, bot and fraud detection, transactional email and SMS, global session storage, and tailored support and advisory for your specific Better Auth setup.
Active Founders
Bereket Engida
Bereket Engida
Founder
Twitter account
 
KinfeMichael Tariku
KinfeMichael Tariku
Founder
Twitter account
 
Better Auth
Better Auth
Founded:2025
Batch:Spring 2025
Team Size:2
Status:
Active
Primary Partner:Pete Koomen
 
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Company Launches
Better Auth - The Authentication Framework for TypeScript
See original launch post

Hey! 👋 We’re building Better Auth - a comprehensive, framework-agnostic authentication framework for TypeScript. It lets you roll your own auth directly on your backend and database, without relying on 3rd party services. From basic sign-ins to complex enterprise systems all with great DX.

https://www.youtube.com/watch?v=j_HjHmprVOs

Auth has been a pain point for many developers in the TypeScript ecosystem for a while. Other open-source libraries require a lot of additional code for anything beyond basic authentication. So, we set out to build a comprehensive auth library - framework-agnostic, with a robust set of features out of the box, a plugin ecosystem for everything else you might need, and great documentation.

Since launching v1 just 5 months ago:

  • 13K+ GitHub stars and 350K+ monthly npm downloads
  • We've grown into one of the most influential and well-loved open source projects in the TypeScript ecosystem.
  • Used in production by great teams including YC companies and major OSS projects including folo, same, dokploy, zero, onejs and many more.
  • We’re the recommended auth library by Next.js, Nuxt, Astro, and other top JS frameworks.
  • A thriving community with 5K+ members on Discord, 7K+ followers on X, and a growing ecosystem of adjacent libraries built by community members.
  • Featured by creators like Theo, Dev Ed and more

To take it further, and after seeing the pain points of our current users, we're building an infrastructure layer on top of the framework to extend the library with functionality we can't offer through the framework alone:

  • A comprehensive admin dashboard with user management & analytics
  • Bot/fraud/abuse detection
  • Global session storage
  • and more…

To be clear – we’re not building a third-party auth service. Our goal is to make rolling your own auth so ridiculously easy that you’ll never need one.

Get started with the library here: better-auth.com/docs/installation

Join the waitlist for infra: http://better-auth.build/

Star the repo: https://github.com/better-auth/better-auth