Light-Weight Visual Components Library (LwVCL) is a powerful, small, fast, efficient, framework of visual components that provides a rich set of customizable, flexible user interface components. There are versions for J2SE/J2ME Personal Profile, J2ME MIDP, .NET, and SWT. This provides a unified GUI framework for different platforms that provides the same API, the same concepts, and the same look and feel.
StoryTestIQ (a.k.a. "STIQ") is a tool for creating "Executable Requirements", which have also been known as acceptance tests or functional tests. STIQ was developed based on two other open source acceptance testing tools, Selenium and FitNesse. This combination allowed StoryTestIQ to capture the Web browser based testing facilities and elegant command language of Selenium along with the wiki based editing and pluggable Fit fixture loading of FitNesse.
wyoGuide is a tutorial, a collection of guidelines for building cross-platform applications with a well-designed, consistent look and feel. It gives ideas and advice on how an application and its GUI could and should be written. Development with these guidelines gives the GUI of an application a standard set of base functionality. wyoGuide also provides sample code for each guideline written in C++ using the wxWidgets (formerly wxWindows) framework. For a seasoned developer it shouldn't be difficult to adapt these guidelines to other languages or frameworks.