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SECURITY ALTERNATIVES

Best Open-Source IAM Alternatives to Keycloak (2026)

Comparing self-hosted authentication, SSO, and identity management systems?

All Keycloak Releases Official Site ↗

Architectural Summary & Key Differentiators

Keycloak is the established Java-based enterprise identity provider. Authentik delivers a modern, lightweight Python/Go alternative with intuitive flow builders and lower resource footprint.

Direct Engineering Comparison Matrix
Tool / Solution Category Latest Version Tracked Updates Avg. Impact Breaking Change % Actions
Keycloak (Baseline) SECURITY 26.8.1 117 releases 3.9/10 6% Changelog →
authentik SECURITY version/2026.8.5 253 releases 4.7/10 5%
In-Depth Breakdown of Each Alternative
SECURITY

authentik

Self-hosted identity provider for single sign-on and access policies.

All Releases Official Site ↗
Latest Tracked Version: version/2026.8.5 (Oct 21, 2026)
Average Impact: 4.7/10
Breaking Changes: 5% of releases
Tracked History: 253 releases

Recent Significant Updates:

version/2026.8.5
authentik version/2026.8.5. Source highlight: See https://docs.goauthentik.io/docs/releases/2026.8#fixed-in-202685
version/2026.5.8
authentik version/2026.5.8. Source highlight: See https://docs.goauthentik.io/docs/releases/2026.5#fixed-in-202658
version/2026.8.4
authentik version/2026.8.4. Source highlight: See https://docs.goauthentik.io/docs/releases/2026.8#fixed-in-202684