Caliburn - Caliburn implements a variety of UI patterns for solving real-world problems. Patterns that are enabled by the framework include MVC, MVP, Presentation Model (MVVM), Commands and Application Controller.
Open Source projects are free, a great variety of packages for specific needs. This includes libraries and toolkits.
Based on a wide spectrum, solutions come from programming models and complete applications in general.
This weblog will develop a series of posts exploring those useful applications. The labels should help locate posts for a particular library or type of application.