
Clerk has significantly broader feature support than Authelia, with 31 supported features versus 18. Clerk fully covers authentication and extensibility and more, and both tools fully cover branding.
Supports FIDO2 security keys and passkeys so users can register multiple WebAuthn credentials and authenticate with a passkey
Sessions can be configured with custom expiration, inactivity and remember‑me lifetimes allowing long‑lived sessions
Provides translations of the login portal and a language picker with support for multiple locales
| Authelia | Clerk | |
|---|---|---|
Supports FIDO2 security keys and passkeys so users can register multiple WebAuthn credentials and authenticate with a passkey | ||
Sessions can be configured with custom expiration, inactivity and remember‑me lifetimes allowing long‑lived sessions | ||
Provides translations of the login portal and a language picker with support for multiple locales |
Clerk offers broader coverage than Authelia, supporting 2 certifications and regulatory frameworks compared to 0 for Authelia. Since Authelia is open source and does not include compliance certifications, you’ll need to manage compliance yourself.

| Compliance | Authelia | Clerk |
|---|---|---|