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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
2Zitadel logoZitadelOpen sourceYesWeb, Self-hosted4 of 462.6
3authentik logoauthentikOpen sourceYesSelf-hosted4 of 459.6
4Logto logoLogtoOpen sourceYesWeb, Self-hosted4 of 457.2
  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)
  2. Zitadel logo

    2. Zitadel

    Best for: B2B SaaS teams that want multi-tenant identity with the option to self-host

    Open sourceSelf-hostableWeb, Self-hosted

    62.6

    score / 100

    Why switch from Casdoor

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

    Pros

    • Multi-tenancy and delegated admin built into the core
    • Choice of managed cloud or self-hosting the same code
    • Full audit trail from its event-sourced design

    Cons

    • AGPL licence may need legal review for some companies
    • Smaller community than Keycloak
    • Free cloud tier is limited in daily active users
    Visit Zitadel Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    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 Zitadel a good Casdoor alternative?

    Verified facts

    4 of 4 verified
    License
    AGPL-3.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Free plan
    $0/month cloud tier
    Checked Oct 25, 2026zitadel.com(opens source in a new tab)
    Pro price
    $100/month
    Checked Oct 25, 2026zitadel.com(opens source in a new tab)
    Data location
    EU, US, Switzerland or Australia
    Checked Oct 25, 2026zitadel.com(opens source in a new tab)
  3. authentik logo

    3. authentik

    Best for: Self-hosters and IT teams who want one identity provider for web apps, LDAP and VPNs

    Open sourceSelf-hostableSelf-hosted

    59.6

    score / 100

    Why switch from Casdoor

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

    Pros

    • Covers OIDC, SAML, LDAP, RADIUS and proxy auth in one tool
    • Visual flows and Python policies for custom logic
    • Free open-source edition with no user limits

    Cons

    • Flow and stage concepts take time to learn
    • No managed cloud; you operate it yourself
    • Some enterprise features need a paid licence
    Visit authentik Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    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 authentik a good Casdoor alternative?

    Verified facts

    4 of 4 verified
    Free plan
    Open-source edition, free
    Checked Oct 25, 2026goauthentik.io(opens source in a new tab)
    Protocols
    OIDC, SAML, LDAP, SCIM, RADIUS, Kerberos
    Checked Oct 25, 2026goauthentik.io(opens source in a new tab)
    Enterprise price
    $5 per user/month, billed annually
    Checked Oct 25, 2026goauthentik.io(opens source in a new tab)
    Self-hosting
    Yes
    Checked Oct 25, 2026goauthentik.io(opens source in a new tab)
  4. Logto logo

    4. Logto

    Best for: SaaS developers who want open-source, standards-based auth with an affordable cloud

    Open sourceSelf-hostableWeb, Self-hosted

    57.2

    score / 100

    Why switch from Casdoor

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

    Pros

    • Open source and self-hostable, with a free cloud tier
    • Clean admin console and customisable sign-in pages
    • Multi-tenant organisations and RBAC built in

    Cons

    • Smaller ecosystem than Auth0 or Keycloak
    • Some enterprise features are cloud or paid only
    • Usage-based token billing takes some estimating
    Visit Logto Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    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 Logto a good Casdoor alternative?

    Verified facts

    4 of 4 verified
    License
    MPL-2.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Free plan
    Up to 50,000 MAU
    Checked Oct 25, 2026logto.io(opens source in a new tab)
    Starting price
    Pro from $24/month
    Checked Oct 25, 2026logto.io(opens source in a new tab)
    Self-hosting
    Yes
    Checked Oct 25, 2026logto.io(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.