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 five alternatives to Phase Two, not only websites but also apps for SaaS and Self-Hosted. The best Phase Two alternative is AuthKit, which is both free and Open Source. Other great sites and apps similar to Phase Two are Auth0, Frontegg, Ping Identity and Cloud-IAM.