# Keycloak vs Zitadel

**Leader by Vioscale score:** Keycloak

| Attribute | Keycloak | Zitadel |
|---|---|---|
| **Vioscale score** | 71.8 (47% (low)) | 65.3 (46% (low)) |
| activity.commits_last_30d | 100 | 42 |
| adoption.dependent_repos | 1,153 | 0 |
| adoption.github_stars | 36,428 | 14,862 |
| adoption.package_downloads_weekly | 1,713,825 | - |
| deployment.options | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"self_hosted":true}` |
| description.long | Centralized authentication and authorization platform that manages user identity and access control across applications, reducing the need for individual apps to build their own login systems. | A multi-tenant, API-first identity and access management platform offering single sign-on, multi-factor authentication, passkeys, and complete audit trails. Available as a managed cloud service or self-hosted deployment, designed for developers building secure SaaS and B2B applications. |
| features.capabilities | `{"mfa":true,"oidc":true,"rbac":true,"hosting":"both","saml_sso":true,"hosted_ui":"both","open_source":true,"passwordless":true,"social_login":true,"b2b_multi_tenant":true,"passkeys_webauthn":true,"scim_provisioning":true}` | `{"mfa":true,"oidc":true,"rbac":true,"hosting":"both","saml_sso":true,"hosted_ui":"both","open_source":true,"passwordless":true,"social_login":true,"b2b_multi_tenant":true,"passkeys_webauthn":true,"scim_provisioning":true}` |
| integrations.count | 10 | 12 |
| integrations.list | `[{"name":"GitHub"},{"name":"Google"},{"name":"Facebook"},{"name":"Twitter"},{"name":"LDAP"},{"name":"Active Directory"},{"name":"Kerberos"},{"name":"Kubernetes"},{"name":"Apache APISIX"},{"name":"OpenTelemetry"}]` | `[{"name":"Google"},{"name":"Microsoft"},{"name":"GitHub"},{"name":"LDAP"},{"name":"SAML 2.0"},{"name":"SCIM 2.0"},{"name":"OpenID Connect"},{"name":"gRPC"},{"name":"connectRPC"},{"name":"REST API"},{"name":"Webhooks"},{"name":"Actions"}]` |
| language.primary | Java | Go |
| license.spdx | Apache-2.0 | AGPL-3.0 |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"CH","primaryMarkets":["US","EU"],"availabilityScope":"regional","availableCountries":["US","AU","CH"],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true,"linux":true,"windows":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","summary":"Free, open-source software","freeTier":true,"sourceUrl":"https://www.keycloak.org","retrievedAt":"2026-08-14T13:39:48.793Z"}` | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"Free tier for development and testing","features":["100 daily active users","3 external identity providers","5,000 management API requests","Community support","1 management instance"],"contactSales":false,"includedLimits":{"instances":"1","daily_active_users":"100","management_api_requests":"5000","external_identity_providers":"3"}},{"free":false,"name":"Pro","summary":"$100/month including 25,000 DAU and 500,000 API requests; overage pricing available","features":["25,000 daily active users","500,000 management API requests","3 external identity providers","Multifactor authentication","Passkeys/WebAuthn","Customizable hosted login","Professional support","24/7 support hours","Audit trail with 2-week history","Role-based access control"],"commitment":"monthly","components":[{"kind":"fixed","amount":100,"period":"month","currency":"USD"}],"contactSales":false,"includedLimits":{"daily_active_users":"25000","management_api_requests":"500000","external_identity_providers":"3"}},{"free":false,"name":"Enterprise","summary":"Custom pricing and configuration","features":["Custom scaling","Custom compliance","Custom security questionnaires","Custom contract and MSA","Up to 99.99% availability SLA","Support with SLO as low as 30 minutes"],"contactSales":true}],"addOns":[{"name":"Custom Domain","components":[{"kind":"one_time","amount":50,"currency":"USD"}]},{"name":"Extended Support & SLA","components":[{"kind":"one_time","amount":999,"currency":"USD"}]}],"summary":"Free tier available. Pro plan from $100/month with 25,000 DAU included. Usage-based overage pricing for additional capacity.","currency":"USD","freeTier":true,"sourceUrl":"https://zitadel.com/pricing/detail","retrievedAt":"2026-08-14T09:22:35.614Z","startingPrice":{"amount":100,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | freemium |
| pricing.price_level | free | high |
| pricing.transparent | yes | yes |
| release.cadence_days | 13 | 5 |
| release.history | `[{"url":"https://github.com/keycloak/keycloak/releases/tag/nightly","date":"2022-09-27T02:22:00Z","type":"prerelease","version":"nightly"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.7.2","date":"2026-08-19T05:26:20Z","type":"stable","version":"26.7.2"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.7.1","date":"2026-08-05T15:54:37Z","type":"stable","version":"26.7.1"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.7.0","date":"2026-07-09T06:58:13Z","type":"stable","version":"26.7.0"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.6.4","date":"2026-06-26T19:19:51Z","type":"stable","version":"26.6.4"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.6.3","date":"2026-06-04T17:00:13Z","type":"stable","version":"26.6.3"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.6.2","date":"2026-05-19T12:41:03Z","type":"stable","version":"26.6.2"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.6.1","date":"2026-04-15T13:58:02Z","type":"stable","version":"26.6.1"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.6.0","date":"2026-04-08T08:54:19Z","type":"stable","version":"26.6.0"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.5.7","date":"2026-04-02T14:47:13Z","type":"stable","version":"26.5.7"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.5.6","date":"2026-03-19T06:45:39Z","type":"stable","version":"26.5.6"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.5.5","date":"2026-03-05T15:40:30Z","type":"stable","version":"26.5.5"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.5.4","date":"2026-02-20T09:19:45Z","type":"stable","version":"26.5.4"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.5.3","date":"2026-02-10T07:30:08Z","type":"stable","version":"26.5.3"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.5.2","date":"2026-01-23T14:26:58Z","type":"stable","version":"26.5.2"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.5.1","date":"2026-01-14T18:09:13Z","type":"stable","version":"26.5.1"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.5.0","date":"2026-01-06T07:42:32Z","type":"stable","version":"26.5.0"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.4.7","date":"2025-12-01T08:14:11Z","type":"stable","version":"26.4.7"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.4.6","date":"2025-11-25T17:32:43Z","type":"stable","version":"26.4.6"},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.4.5","date":"2025-11-12T15:24:23Z","type":"stable","version":"26.4.5"}]` | `[{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.17.1","date":"2026-08-14T06:41:55Z","type":"stable","version":"v4.17.1"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v3.4.15","date":"2026-08-14T07:59:53Z","type":"stable","version":"v3.4.15"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.17.0","date":"2026-08-12T08:37:50Z","type":"stable","version":"v4.17.0"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.16.3","date":"2026-08-07T17:10:12Z","type":"stable","version":"v4.16.3"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.16.2","date":"2026-07-29T05:55:47Z","type":"stable","version":"v4.16.2"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v3.4.14","date":"2026-07-29T07:30:54Z","type":"stable","version":"v3.4.14"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.16.1","date":"2026-07-17T08:44:37Z","type":"stable","version":"v4.16.1"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v3.4.13","date":"2026-07-17T09:07:58Z","type":"stable","version":"v3.4.13"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.16.0","date":"2026-07-10T05:56:50Z","type":"stable","version":"v4.16.0"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.15.3","date":"2026-06-22T11:46:24Z","type":"stable","version":"v4.15.3"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.15.2","date":"2026-06-17T04:21:59Z","type":"stable","version":"v4.15.2"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v3.4.12","date":"2026-06-17T07:09:32Z","type":"stable","version":"v3.4.12"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v3.4.11","date":"2026-06-10T04:46:49Z","type":"stable","version":"v3.4.11"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.15.1","date":"2026-06-08T18:30:50Z","type":"stable","version":"v4.15.1"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.15.0","date":"2026-05-04T05:21:39Z","type":"stable","version":"v4.15.0"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v3.4.10","date":"2026-05-04T07:16:10Z","type":"stable","version":"v3.4.10"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.14.0","date":"2026-04-24T05:41:55Z","type":"stable","version":"v4.14.0"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.13.1","date":"2026-04-01T07:41:31Z","type":"stable","version":"v4.13.1"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.13.0","date":"2026-03-23T07:23:30Z","type":"stable","version":"v4.13.0"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v5.0.0-base","date":"2026-03-23T06:56:07Z","type":"prerelease","version":"v5.0.0-base"}]` |
| reliability.sla_pct | - | 99.99 |
| reliability.status_page | - | yes |
| security.disclosure_policy | yes | yes |
| security.gdpr | - | yes |
| security.scorecard | 7.9 | - |
| security.vulnerabilities | `{"count":58,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.keycloak%3Akeycloak-core&per_page=100","last_12m":0,"max_severity":"CRITICAL"}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=zitadel%2Fzitadel&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Auth & Identity Software)

| Capability | Keycloak | Zitadel |
|---|:--:|:--:|
| **Deployment** |  |  |
| Hosting | Cloud + self-hosted | Cloud + self-hosted |
| **Methods** |  |  |
| Social login | ✓ | ✓ |
| Passwordless | ✓ | ✓ |
| Passkeys / WebAuthn | ✓ | ✓ |
| Multi-factor auth | ✓ | ✓ |
| **Enterprise** |  |  |
| SAML SSO | ✓ | ✓ |
| SCIM provisioning | ✓ | ✓ |
| B2B / multi-tenancy | ✓ | ✓ |
| **Standards** |  |  |
| OpenID Connect provider | ✓ | ✓ |
| **Delivery** |  |  |
| Hosted UI | Both | Both |
| **Access** |  |  |
| RBAC | ✓ | ✓ |
| **Licensing** |  |  |
| Self-hostable OSS core | ✓ | ✓ |

*Source: Vioscale. Generated 2026-09-01T15:16:19.685Z. "-" = undocumented, not absent.*