ZITADEL

ZITADEL is an open-source identity infrastructure platform built for cloud-native deployments. It delivers enterprise-grade authentication, authorization, and user management with full support for OIDC, OAuth 2.0, SAML 2.0, and passkeys out of the box. Trusted by development teams and enterprises worldwide, ZITADEL is a self-hosted alternative to Auth0, Keycloak, and AWS Cognito — offering complete control over user data without per-user fees or vendor lock-in.

Common Use Cases

Development teams use ZITADEL to implement centralized authentication across microservices, eliminating scattered per-service login systems in favor of a single trusted identity provider. SaaS product teams leverage its native multi-tenancy to manage customer organizations with complete data isolation and per-tenant branding. Security teams rely on its immutable, event-sourced audit trail to satisfy SOC 2 and GDPR compliance requirements. Enterprise IT departments connect ZITADEL to existing OIDC providers, enabling seamless Single Sign-On across on-premises and cloud applications.

Key Features

• OIDC and OAuth 2.0 provider for application authentication
• SAML 2.0 support for enterprise SSO integrations
• Passkeys and WebAuthn for passwordless, phishing-resistant login
• Multi-factor authentication: TOTP, SMS, email, and hardware keys
• Native multi-tenancy with per-organization branding and policies
• Social login with Google, GitHub, Microsoft, and custom OIDC providers
• Role-based access control (RBAC) with fine-grained permissions
• SCIM-based user provisioning and lifecycle management
• Immutable event-sourced audit trail for compliance requirements
• REST and gRPC APIs for full programmatic control

Why deploy ZITADEL on Hostinger VPS

Running ZITADEL on a dedicated VPS gives you complete control over sensitive identity data — no shared infrastructure, no per-user pricing, and no dependency on third-party auth providers. Your authentication stack scales with your application on hardware you control, allowing custom branding, fine-tuned security policies, and integrations with internal systems that cloud IAM providers cannot support. With Hostinger VPS, you get a production-ready ZITADEL instance backed by PostgreSQL in minutes, ready to serve as the identity backbone for your entire application portfolio.