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Authentication & identity tools - Top Picks for 2026

Last updated
Jun 3, 2026
Based on
763 reviews
Products considered
173

Authentication & identity tools verify users, manage logins, and protect access. They power sign-ups, memberships, biometrics, and secure sessions for apps and sites.

FirebaseClerkAppwriteAuth0PropelAuthCloaked
Tines
Tines Build agents & automations integrated across your workspace

Top reviewed authentication & identity tools

Top reviewed
"Among the most-reviewed tools, the category splits between all-in-one app backends and dedicated identity layers. Firebase and Appwrite pair authentication with databases, realtime features, storage, and serverless workflows for shipping full apps quickly, while Clerk focuses on polished sign-in, session handling, organizations, roles, and modern web integrations for SaaS teams."
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