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Authentication & identity tools - Top Picks for 2026

Last updated
May 27, 2026
Based on
757 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
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Top reviewed authentication & identity tools

Top reviewed
"Across this list, identity tools split between app-building stacks and dedicated customer IAM. Firebase and Appwrite suit teams wanting auth bundled with databases, realtime features, storage, and serverless workflows, while Clerk leans into polished sign-in, session management, organizations, and enterprise-ready SSO for modern SaaS products."
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