Zitadel
Open-source identity infrastructure platform built in Go with OAuth 2.0, OpenID Connect, SAML 2.0, passkey support, multi-tenancy, and custom actions, designed as modern alternative to Keycloak and Okta.
Overview
| Category | Auth |
| Self-Hostable | Yes |
| On-Prem | No |
| Best For | startup, growth, enterprise |
| Last Verified | 2026-02-13 |
Strengths & Weaknesses
Strengths:- dx
- customization
- cost
- Newer platform with smaller community
- Less mature integrations
- Requires self-hosting operational knowledge
When to Use
Best when:- Want modern open source alternative to Okta
- Need multi-tenancy from day one
- Prefer Go-based infrastructure