Gluu and FusionAuth are two powerful identity management solutions designed to simplify the process of building an in-house system, eliminating costly development and maintenance time. Both platforms provide standard features of a modern identity management platform, as well as unique features tailored for modern applications and businesses. They share commonalities such as single-tenant and on-premises capabilities, support for common authentication standards like OAuth and OpenID Connect, and offer free options to control costs. However, Gluu has a more complex installation process requiring deeper knowledge of server management, while FusionAuth offers an easy-to-install solution with a setup wizard. Additionally, FusionAuth provides more control over user experience through customizable email templates, triggers, and localization, as well as advanced features like event-based emails and real-time analytics.