The Open Source Auth Platform
Built for SaaS.
Multi-tenancy, Passkeys, Audit Logs, and RBAC out of the box. Stop building auth from scratch. Start Shipping.
Everything you need for SaaS Auth
We built the features that usually take months, so you can ship your product this weekend.
SaaS-Native Multi-Tenancy
Built-in organization support. Users can join multiple tenants with different roles (Owner, Admin, Member).
Passkeys-First
Say goodbye to passwords. Enterprise-grade WebAuthn support out of the box.
Audit Logs
Track every login, failed attempt, and profile change. SOC2 compliance made easy.
Secure by Default
HTTP-Only cookies, Refresh Token Rotation, and strict Reuse Detection.
Self-Hosted
Keep your data. Deploy anywhere (AWS, Vercel, DigitalOcean). No vendor lock-in.
RBAC & Permissions
Granular permission system. define what users can do within their organizations.
Why builders choose AuthKit
Stop paying per MAU. Own your auth.
| Feature | AuthKit | Clerk | Auth0 |
|---|---|---|---|
| Pricing | Free (MIT) | $35/mo+ | $$$ |
| Self-Hosted | |||
| Multi-Tenancy | Complex | ||
| Passkeys | |||
| Audit Logs | $$$ | $$$ | |
| Data Ownership | 100% | 0% | 0% |
Ready to ship?
Clone the repo, start the docker containers, and you have a full authentication system running locally in under 2 minutes.