What we love
- You own the database + sessions
- Type-safe
- MIT, free forever
What to watch
- No hosted UI / dashboard
- You implement password flows yourself
Best for
TypeScript developers who want a code-first, vendor-free auth library.
Key features
- Session management library
- Bring your own database
- Type-safe
- MIT
- Adapters for Postgres / SQLite / etc.
What is Lucia Auth?
Lucia is a lightweight, type-safe auth library you embed in your codebase. No SaaS — you own the database, sessions, and tokens.
Who is it for?
Lucia Auth is a great fit for teams looking for a backend & infrastructure tool that fits the free tier. It's especially loved by engineering teams building serious production systems.
Key tags
AuthenticationOpen SourceTypeScript
How it compares
We curate Lucia Auth among the top Backend & Infrastructure tools on saas.fyi. Browse all Backend & Infrastructure tools to compare alternatives, or use the directory's search and filters to find a closer fit.
Pricing
Free OSS. Pricing tier: Free. Always confirm current pricing on the official site — SaaS pricing changes frequently.
Quick facts
- Category: Backend & Infrastructure
- Pricing: Free — Free OSS
- Website: lucia-auth.com
