FreeIPA

This system provides centralized management of authentication, authorization, and identity information for Linux-based environments, using open-source components like Kerberos, LDAP, and DNS to streamline identity lifecycle, policy enforcement, and security compliance. Its key features include multi-platform user and host management via command-line, web interfaces, and APIs; enforcement of security policies such as single sign-on, access controls, and trust relationships with other identity management systems; and high scalability with full multi-master replication, automation for deployment, and extensible interfaces designed for system administrators, security teams, and IT professionals seeking to improve security, simplify administration, and improve integration across diverse enterprise networks.

FreeIPA can be found in Identity & Access Management (IAM) categories.