wxBrowser is an application browser based on the wxWidgets GUI framework. It's similar to a regular old web browser only, instead of reading HTML and displaying content it reads XML and executes presentation logic (wxPython) in a client side application.
ACDK - Artefaktur Component Development Kit - is a platform independent C++-framework similar to Java or C#/.NET for generating distributed and scriptable components and applications.
a tool-kit for creating "web 2.5 generation", include several useful stuff to work with semantic web (otology editor, gui for sparql query, ontology components...) and design RIAs's gui visually (html + ajax based apps, flash based apps,...)