Firebase Authentication provides application developers backend authentication services with SDKs and customizable sign-in interfaces.
Firebase Authentication supplies backend services, SDKs, and ready-made interface libraries for authenticating application users. It supports password, phone, and federated sign-in methods and integrates with other Firebase services.
Application developers can use FirebaseUI for complete sign-in flows or integrate individual methods through the SDK. Its customizable interfaces support mobile and web authentication, including account recovery and account linking.
| Attribute | Firebase Authentication | Supabase Auth | |
|---|---|---|---|
| Provider | |  | |
| Founded | 2011 | 2020 | |
| Sells To | Small Business | Enterprise, Small Business | |
| Pricing Model | Recurring | Recurring, Software, Usage-based | |
| Ownership | Public | Equity, Venture-backed |
Provider
Founded 2011
Sells To Small Business
Pricing Model Recurring
Ownership Public
Provider
Founded 2020
Sells To Enterprise, Small Business
Pricing Model Recurring, Software, Usage-based
Ownership Equity, Venture-backed
Passwordless customer identity platform letting consumer apps sign in via passkeys, magic links, codes, and social login through one API.
Full-stack authentication and user management with drop-in UI components for web and mobile.
Open-source user authentication for app developers, with prebuilt login UI and SDKs that keep sign-in on the app's domain.
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Plugin-based authentication framework that runs inside a developer's own application across Next.js, Nuxt, SvelteKit, and other stacks.
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Developer-first identity platform providing APIs and SDKs for passwordless authentication, session management, B2B identity, and fraud prevention.
Auth0-based customer identity and access management for B2C, B2B, and developer-built applications.
User verification and multi-factor authentication APIs for signup and login security.
Versine lets platforms authenticate AI agents acting under a user's delegated permission at sign-in.
Passwordless customer identity platform letting consumer apps sign in via passkeys, magic links, codes, and social login through one API.
Full-stack authentication and user management with drop-in UI components for web and mobile.
Open-source user authentication for app developers, with prebuilt login UI and SDKs that keep sign-in on the app's domain.
PropelAuth provides B2B authentication software with organization-aware permissions and enterprise single sign-on.
AuthKit is WorkOS's drop-in authentication UI with SSO, MFA, social login, and role-based access control.
FusionAuth is a customer identity and access management product that secures access for people, services, and AI agents.
Plugin-based authentication framework that runs inside a developer's own application across Next.js, Nuxt, SvelteKit, and other stacks.
Descope provides customer identity software with visual authentication workflows for business and consumer applications.
Kinde Auth is Kinde's authentication and user management product for developers building B2B and consumer apps.
Developer-first identity platform providing APIs and SDKs for passwordless authentication, session management, B2B identity, and fraud prevention.
Nango Auth embeds OAuth and API-key credential management for SaaS integrations.
Auth0-based customer identity and access management for B2C, B2B, and developer-built applications.
User verification and multi-factor authentication APIs for signup and login security.
Versine lets platforms authenticate AI agents acting under a user's delegated permission at sign-in.