12 Best Authentication-as-a-Service (AaaS) Providers Compared (2026): Features & Pricing
A 2026 comparison names Auth0 the leading authentication-as-a-service platform, with Entra External ID and Cognito as cheaper alternatives.
GBHackers compared 12 authentication-as-a-service providers using published pricing at three monthly-active-user scenarios. Auth0, Okta's developer line, is ranked best overall for ecosystem and enterprise procurement, while Microsoft Entra External ID, Amazon Cognito, and Firebase Auth are cited for low price floors. Kinde is called the value insurgent, with Corbado, Stytch, Descope, WorkOS, Frontegg, FusionAuth, and Ping Identity covering passkeys, fraud signals, B2B suites, and self-hosting.
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