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The best authentication & identity tools in 2026

Last updated
Feb 21, 2026
Based on
722 reviews
Products considered
165

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

FirebaseClerkAppwriteAuth0PropelAuth
memories.sh
memories.sh One layer for memories, skills, and rules across any agent

Top reviewed authentication & identity tools

Top reviewed
suits teams needing integrated auth with real-time data, analytics, and serverless scale, trading easy starts for Google Cloud complexity. excels for enterprise-grade SSO, MFA, and federation, with robust RBAC and smooth onboarding. targets modern SaaS with polished components, fast setup, org/role management, and social sign-on, prioritizing developer experience and rapid launch.
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