VoidAuth is described as 'Open-source SSO provider for self-hosted apps with passkey support, user invites, self-registration, strong privacy, admin ease, and local management' and is a identity management tool in the security & privacy category. There are more than 25 alternatives to VoidAuth for a variety of platforms, including SaaS, Web-based, Self-Hosted, Linux and Kubernetes apps. The best VoidAuth alternative is Keycloak, which is both free and Open Source. Other great apps like VoidAuth are ZITADEL , authentik, Hanko and Auth0.