The best Identity & access management
Every option ranked — open-source, self-hostable, and commercial — by our transparent Sovereignty Score, with honest trade-offs so you choose what fits you, not us.
Single sign-on, MFA and user directories. Billed per monthly active user, which makes success expensive and makes the open options unusually attractive.
L3Infrastructure — layer 3 of the AI stack- 1
Keycloak
Top pickOpen sourceApache-2.0 identity, backed by Red Hat, running at enterprise scale.
Free and open source. Red Hat build with commercial support available. · in our Okta comparison →
What is Keycloak? →93sovereignty - 2
Ory Kratos
Open sourceIdentity as an API — no UI, no opinions, entirely yours.
Free and open source. Ory Network is a paid hosted option. · in our Okta comparison →
What is Ory Kratos? →92sovereignty - 3
ZITADEL
Open sourceMulti-tenant identity built for products, not just employees.
Free and self-hostable. ZITADEL Cloud is paid per active user. · in our Okta comparison →
What is ZITADEL? →88sovereignty - 4
Logto
Open sourceThe fastest route from nothing to working sign-in.
Free and self-hostable. Logto Cloud is paid with a free tier. · in our Okta comparison →
What is Logto? →87sovereignty - 5
authentik
Open sourceModern identity that a small team can actually operate.
Free and self-hostable for the open core. Enterprise tier is commercial. · in our Okta comparison →
What is authentik? →85sovereignty
Replacing a specific tool?
Head-to-head comparisons for each popular identity & access management product.
Straight head-to-heads
Two identity & access management tools, side by side — verified facts and a plain verdict.