Supabase Auth vs Firebase Authentication

Learn how Supabase Auth and Firebase Authentication 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.

Supabase Auth

Complete user management with social logins built-in

Visit Supabase Auth Read more

Details:

B2B
Yes
B2C
Yes
Open Source
Yes
Self-hosted
Yes

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Firebase Authentication

Secure multi-platform authentication in under 10 lines

Visit Firebase Authentication Read more

Details:

B2B
Yes
B2C
Yes
Open Source
No
Self-hosted
No

Feature Comparison

Supabase Auth offers broader feature coverage than Firebase Authentication, supporting 29 features compared to 22. Supabase Auth fully covers extensibility and platform.

Passwordless Authentication

Supabase Auth

Firebase Authentication

Social Connections

Supabase Auth

Firebase Authentication

Passkeys

Supabase Auth

Supabase does not offer built-in passkey authentication but offers a third‑party integration with Corbado to support Passkeys

Firebase Authentication

Long Lived Sessions

Supabase Auth

User sessions are long‑lived by default and can be time‑boxed or configured with inactivity timeouts on paid plans

Firebase Authentication

Session Management

Supabase Auth

Supabase lets developers control session duration, enforce inactivity timeouts and revoke sessions through the Admin API

Firebase Authentication

Multi-Language

Supabase Auth

Firebase Authentication

Email templates and FirebaseUI can be localized; set the language with a `languageCode` property or override CSS for more than 40 languages

	Supabase Auth	Firebase Authentication
Passwordless Authentication
Social Connections
Passkeys	Supabase does not offer built-in passkey authentication but offers a third‑party integration with Corbado to support Passkeys
Long Lived Sessions	User sessions are long‑lived by default and can be time‑boxed or configured with inactivity timeouts on paid plans
Session Management	Supabase lets developers control session duration, enforce inactivity timeouts and revoke sessions through the Admin API
Multi-Language		Email templates and FirebaseUI can be localized; set the language with a `languageCode` property or override CSS for more than 40 languages

Compliance Comparison

Firebase Authentication offers significantly broader coverage than Supabase Auth, supporting 6 certifications and regulatory frameworks compared to 3 for Supabase Auth.