Phase Two is described as 'Builds on top of Keycloak, one of the most widely used open source identity and access management systems in the world. Our extensions bring multi-tenancy, audit logging, a self-service admin portal, and more to enhance Keycloak for SaaS and on-premise use cases' and is a identity management tool in the network & admin category. There are more than 25 alternatives to Phase Two, not only websites but also apps for a variety of platforms, including Self-Hosted, SaaS, Linux and Windows apps. The best Phase Two alternative is VoidAuth, which is both free and Open Source. Other great sites and apps similar to Phase Two are Keycloak, authentik, ZITADEL and Authelia.