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Casdoor alternatives: 4 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Casdoor: documentation is uneven, and admin UI exposes many settings that can overwhelm. We ranked 4 alternatives by how directly each one replaces Casdoor, then by reviews, real visits and how recently each app's facts were checked against its own website. Keycloak currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Keycloak logoKeycloakOpen sourceYesSelf-hosted, Linux, macOS +14 of 466.5
  1. Keycloak logo

    1. KeycloakTop pick

    Best for: Organisations that want standards-based SSO on their own infrastructure at no licence cost

    Open sourceSelf-hostableSelf-hosted, Linux, macOS, Windows

    66.5

    score / 100

    Why switch from Casdoor

    More mature open-source server with a large enterprise user base.

    Pros

    • Free and open source under Apache 2.0
    • Supports OIDC, OAuth 2.0 and SAML with LDAP and AD federation
    • Mature, widely deployed and well understood

    Cons

    • You run, scale and upgrade it yourself
    • Admin concepts and theming have a steep learning curve
    • Login pages look dated without custom themes
    Visit Keycloak Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Keycloak a good Casdoor alternative?

    Verified facts

    4 of 4 verified
    License
    Apache-2.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Protocols
    OpenID Connect, OAuth 2.0, SAML
    Checked Oct 25, 2026keycloak.org(opens source in a new tab)
    Directory federation
    LDAP and Active Directory
    Checked Oct 25, 2026keycloak.org(opens source in a new tab)
    Deployment
    Container image for Docker, Podman, Kubernetes
    Checked Oct 25, 2026keycloak.org(opens source in a new tab)

The best Casdoor alternative for…

The highest-ranked app in this list for each need.

Keycloak logo

Best Casdoor alternative for most people

Keycloak

More mature open-source server with a large enterprise user base.

Zitadel logo

Best Casdoor alternative for a free option

Zitadel

Open-source, multi-tenant identity with a more polished cloud service.

authentik logo

Best Casdoor alternative for open source

authentik

Self-hosted identity provider with a strong community and proxy features.

Logto logo

Best Casdoor alternative for self-hosting

Logto

Developer-friendly open-source auth with a cleaner admin experience.

Keycloak logo

Best Casdoor alternative for Mac

Keycloak

More mature open-source server with a large enterprise user base.

Keycloak logo

Best Casdoor alternative for Windows

Keycloak

More mature open-source server with a large enterprise user base.

Keycloak logo

Best Casdoor alternative for Linux

Keycloak

More mature open-source server with a large enterprise user base.

Zitadel logo

Best Casdoor alternative for working in the browser

Zitadel

Open-source, multi-tenant identity with a more polished cloud service.

Casdoor alternatives: common questions

What is the best alternative to Casdoor?

Keycloak ranks first right now. More mature open-source server with a large enterprise user base. Zitadel and authentik follow it in our ranking.

Is there a free alternative to Casdoor?

Yes. Keycloak (open source), Zitadel (open source), authentik (open source) and Logto (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Casdoor?

Yes: Keycloak, Zitadel, authentik and Logto. Keycloak, Zitadel and authentik can also be self-hosted.

Which Casdoor alternatives work on Linux?

Keycloak runs on Linux.

Why do people switch from Casdoor?

The complaints we hear most: documentation is uneven; admin UI exposes many settings that can overwhelm; smaller Western community than Keycloak.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Casdoor, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.