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Compare Authentication
Structured facts from the catalog for the leading projects in this category.
| Attribute | Keycloak | Authelia | Authentik | ZITADEL | Logto | Ory Kratos |
|---|---|---|---|---|---|---|
| GitHub stars | 37,078 | 29,165 | 25,795 | 15,185 | 14,646 | 13,906 |
| License | Apache-2.0 | Apache-2.0 | Custom | AGPL-3.0 | MPL-2.0 | Apache-2.0 |
| Self-hosted | Yes | Yes | Yes | Yes | Yes | Yes |
| Docker noted | Yes | Yes | Yes | Yes | Yes | — |
| Cloud / hosted | — | — | — | — | Yes | Yes |
| Primary language | Java | Go | Python | Go | TypeScript | Go |
| Last commit | 2026-10-01 | 2026-10-04 | 2026-10-01 | 2026-10-02 | 2026-09-30 | 2026-07-29 |
| Difficulty | Advanced | Not assessed | Moderate | Not assessed | Moderate | Not assessed |
Pairwise comparisons
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