The most comprehensive authentication library for TypeScript
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Auth is a partly solved problem. Open-source libraries often need extra code for anything beyond basic login, while third-party services, though convenient, bring their own challenges—and can get expensive fast.

Better Auth was built to tackle these frustrations. It offers a robust core authentication library, supported by a growing plugin ecosystem, allowing you to quickly add advanced auth features with minimal effort.

• Be Comprehensive: Save users from reinventing the wheel for anything related auth.
• Prioritize Best Practices: provide best practices rather than overwhelming configuration options.
• Framework Agnostic: Support most frameworks and avoid framework specific features and solutions if possible.
• Consistency: Provide a consistent and predictable API across all platforms
• Type Safety: Value type-safety and embrace typescript magic when necessary.

• JWT-Based Authentication: We won’t support JWT-based auth unless provided by a third-party plugin.
• Support for Non-Relational Databases: No plans to support MongoDB or other non-relational databases.
• Deep Customization: Our focus is on delivering opinionated, best-practice defaults, rather than enabling deep customization.

Better Auth is free and open source project licensed under the MIT License. You are free to do whatever you want with it.

You could help continuing its development by:

• Contribute to the source code
• Suggest new features and report issues

If you discover a security vulnerability within Better Auth, please send an e-mail to security@better-auth.com.

All reports will be promptly addressed, and you'll be credited accordingly.