Lucia

Lucia takes the opposite approach to managed auth services: it's an open-source library that provides auth primitives you assemble yourself. Full control, full understanding, no vendor dependency.

Key Features:

• Session Management - Secure session handling
• Database Agnostic - Works with any database
• Framework Support - Adapters for major frameworks
• TypeScript - Full type safety

Why developers choose Lucia:

• Full Control - No black boxes, understand everything
• No Lock-in - Your code, your infrastructure
• Lightweight - Only what you need, nothing more
• Learning - Great for understanding auth deeply

Lucia capabilities:

• OAuth Integration - Social login helpers
• Password Hashing - Secure credential storage
• Session Tokens - Secure token generation
• Validation - Input validation utilities

Lucia is ideal for developers who want to understand their auth system completely, or who have requirements that don't fit managed services. The tradeoff is implementation time, but the knowledge and control gained can be valuable.