ovlt

ovlt

lightweight-auth-server

Shrpp
@Shrpp
Published on Jun 9, 2026
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Details

Categories
Open Source
Pricing
Free
Platforms
CLIAPI

About ovlt

> Most auth servers demand more RAM than your actual app — Keycloak at 512MB, Authentik at 735MB. OVTL is a self-hosted OAuth2 + OIDC server written in Rust that idles at ~20MB, giving you multi-tenant isolation, zero-knowledge encryption, MFA, Passkeys and social login in a single binary that runs on the cheapest VPS you can find. What makes it different is the security model — field-level encryption and zero-knowledge design mean data leaks expose ciphertext, not credentials. And because it's self-hosted with no per-seat pricing, you can scale a SaaS from day one without auth costs ever becoming a problem.

Product Insights

Ovlt provides a self-hosted OAuth2 and OIDC authentication server optimized for high efficiency with low hardware requirements. It supports multi-tenant isolation and advanced security protocols while remaining free to use via CLI and API interfaces.

  • Extremely low idle memory footprint of approximately 20MB.
  • Single binary deployment for quick setup on budget VPS hardware.
  • Advanced security featuring zero-knowledge encryption and field-level encryption.
  • Comprehensive feature set including MFA, Passkeys, and social login.

Ideal for: Backend Developers, Indie Hackers, and B2B SaaS Companies seeking a cost-effective, self-hosted authentication solution that scales without per-seat fees.

Ovlt serves as a resource-efficient, free alternative to heavier or managed solutions like Auth0, Keycloak, Authentik, and OnCallClerk.

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Shrpp
@Shrpp

Feel free to take a look at our roadmap!