A cross-platform GUI library
wxWidgets is a C++ library that lets developers create applications for Windows, Mac OS X, Linux and other platforms with a single code base. It has popular language bindings for Python, Perl, Ruby and many other languages, and unlike other cross-platform toolkits, wxWidgets gives applications a truly native look and feel because it uses the platform's native API rather than emulating the GUI. It's also extensive, free, open-source and mature.
wxCode project is a collection of reusable components based on the cross-platform wxWidgets GUI toolkit. The project provides various tools and facilities for building, maintaining and releasing wxWidgets-based code. Visit the website for more info. Note: As of January 2018 this project has been retired.
Soccer manager with many new features, 2D/3D match engine, it will be released under GPL for Windows and Linux. OSM will include built-in database viewer/editor. Also all world leagues will be in. Over 50 statistics per player.
Second Symthium Server