FusionAuth vs Better Auth
Learn how FusionAuth and Better Auth differ in their key features like authentication, enterprise auth, security, user management and compliance, so you can decide which of these authentication providers is best for you.
FusionAuth
Better Auth
Feature Comparison
FusionAuth has significantly broader feature support than Better Auth, with 41 supported features versus 25. FusionAuth fully covers authentication and machine to machine (m2m) authentication and more.
Magic link and email OTP plugins allow passwordless sign-in using one-time links or codes
Supports multiple social providers through built-in OAuth and generic OAuth plugin for custom providers
The passkey plugin adds FIDO2 / WebAuthn support for passwordless, phishing‑resistant sign‑in
Session settings allow you to configure expiresIn and updateAge to create longer or shorter sessions
No official multi‑language or localization support, but a community plugin for localization exists
| FusionAuth | Better Auth | |
|---|---|---|
Magic link and email OTP plugins allow passwordless sign-in using one-time links or codes | ||
Supports multiple social providers through built-in OAuth and generic OAuth plugin for custom providers | ||
The passkey plugin adds FIDO2 / WebAuthn support for passwordless, phishing‑resistant sign‑in | ||
Session settings allow you to configure expiresIn and updateAge to create longer or shorter sessions | ||
No official multi‑language or localization support, but a community plugin for localization exists |
Compliance Comparison
FusionAuth offers significantly broader coverage than Better Auth, supporting 5 certifications and regulatory frameworks compared to 0 for Better Auth. Since Better Auth is open source and does not include compliance certifications, you’ll need to manage compliance yourself.
FedRAMPCompliant
GDPRCompliant
HIPAACompliant
ISO 27001Certified
SOC2Compliant| Compliance | FusionAuth | Better Auth |
|---|---|---|
| FedRAMPCompliant | ||
| GDPRCompliant | ||
| HIPAACompliant | ||
| ISO 27001Certified | ||
| SOC2Compliant |
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