Alternatives — Authentication & Identity • Switch map

Alternatives to Supabase Auth

Common alternatives buyers consider, plus the simplest rule for when switching is worth it.

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Freshness & verification

Last updated 2026-02-09 Intel generated 2026-02-06 2 sources linked

Alternatives to Supabase Auth

Supabase Auth

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Same ecosystem / platform auth

Compared when teams want auth tightly integrated with a Postgres developer platform experience.

Firebase Authentication

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Step-sideways / app-first auth

Considered when teams are Firebase-first and want built-in auth primitives.

Auth0

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Step-up / CIAM platform

Shortlisted when enterprise SSO and extensibility requirements outgrow lightweight auth defaults.

Head-to-head comparisons

Supabase Auth vs Firebase Authentication →

Product teams compare them when selecting an auth layer that best matches their application stack and long-term authorization model.

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Sources & verification

Pricing and behavioral information comes from public documentation and structured research. When information is incomplete or volatile, we prefer to say so rather than guess.