This site provides a free physics textbook that tells the story of how it became possible, after 2500 years of exploration, to answer such questions. The book is written for the curious: it is entertaining, surprising and challenging on every page.
remaking the classic 1984 arcade game Marble Madness by Atari. The graphics are slightly enhanced to bring them on par with modern standards: there is now a full 3D mode in addition to the usual isometric perspective one
a runtime verification tool used in testing applications for compatibility with Microsoft Windows XP. This tool can be used to test for a wide variety of known compatibility issues while the application is running.
a free Resource Editor for Win32 programs. You can use it if you want to use dialogs, icon, version information or other types of resources. Output files can be compiled by any Win32 compiler, like MinGW and Microsoft Visual C++. To open a file which uses Win32 API symbolic constants, you will also need Win32 header files (usually coming with you compiler).
turns VLC into a RAR player that allows you to watch videos (including seeking) directly from inside multi-volume RAR archives without the need to manually unpack them first.
a free font-building tool that lets you quickly and easily create fonts constructed out of geometrical shapes, which are arranged in a grid pattern, like tiles or bricks. You create ‘FontStructions’ using the ‘FontStructor’ font editor. Once you're done building, FontStruct generates high-quality TrueType fonts, ready to use in any Mac or Windows application. You can keep your creations to yourself or to share. You can also use the FontStruct widget to show your FontStructions on your own website or blog.