Free to list, always.No paid rankings. Every recommendation explains its trade-offs.
OpenSourceChoice

Open-source projects tagged “Sso”.

Inspect repositories, licenses, activity, and alternatives across the Sso ecosystem.

7 projects connectedTag matches come from repository topics and catalog metadata.

The easiest, most secure way to use WireGuard and 2FA.

FreePricingFree and open sourceFree34K2.9K26 hours ago

The most comprehensive authentication framework

FreePricingFree and open sourceFree29.2K2.7K32 hours ago
Apache-2.0

Open-source authentication and authorization server providing SSO, 2FA, and access control for self-hosted apps.

25K1.2KActivity unavailable
GermanyLicense not declared

The authentication glue you need.

Free–CustomPricingFree open source; Enterprise availableFree–Custom22.4K1.7K26 hours ago
MPL-2.0

🧑‍🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.

FreePricingFree and open sourceFree14.2K1.1K30 hours ago
GermanyLicense not declared

Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.

FreePricingFree and open sourceFree9K1K33 hours ago
Apache-2.0

Open source Auth0/Clerk/Firebase alternative. Passkeys, SSO, MFA, passwordless, biometric login. Self-hosted or cloud. Enterprise-ready for SaaS & mobile apps

FreePricingFree and open sourceFree1.9K12435 hours ago
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