Discover desktop application development in Ruby through this comprehensive workshop that guides you through building native GUI applications using Glimmer DSL for LibUI, an award-winning cross-platform framework. Master GUI fundamentals including controls, properties, and listeners while exploring essential software architecture patterns like Observer, MVC (Model-View-Controller), and MVP (Model-View-Presenter). Gain practical experience through hands-on exercises covering GUI basics, data-binding techniques, and advanced implementation concepts. Install the required Glimmer DSL for LibUI gem beforehand by running 'gem install glimmer-dsl-libui' and verify the installation with 'glimmer examples' to maximize learning during this 90-minute hands-on development session.