ZITADEL is described as 'Secure authentication management for your application. Customize as you grow, with easy APIs and programmable workflows. Focus on growing, your login is in good hands' and is a identity management tool in the security & privacy category. There are more than 25 alternatives to ZITADEL for a variety of platforms, including Web-based, Self-Hosted, SaaS, Docker and Linux apps. The best ZITADEL alternative is Keycloak, which is both free and Open Source. Other great apps like ZITADEL are VoidAuth, authentik, Authelia and AuthKit.