FreeIPA vs Keycloak: What are the differences?
Developers describe FreeIPA as "Manage Linux users and client hosts in your realm from one central location with CLI, Web UI or RPC access". FreeIPA is an integrated Identity and Authentication solution for Linux/UNIX networked environments. A FreeIPA server provides centralized authentication, authorization and account information by storing data about user, groups, hosts and other objects necessary to manage the security aspects of a network of computers. On the other hand, Keycloak is detailed as "An open source identity and access management solution". It is an Open Source Identity and Access Management For Modern Applications and Services. It adds authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It's all available out of the box.
FreeIPA belongs to "Operating Systems" category of the tech stack, while Keycloak can be primarily classified under "User Management and Authentication".
FreeIPA is an open source tool with 317 GitHub stars and 186 GitHub forks. Here's a link to FreeIPA's open source repository on GitHub.