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.
Modular, touch screen friendly navigation system with GPS tracking, realtime routing engine and support for various vector map formats. Works on a wide range of devices, from computers to smartphones.
A cross-platform interpreter for many point-and-click adventure games
ScummVM is a cross-platform interpreter for many point-and-click adventure games. This includes LucasArts SCUMM games (such as Monkey Island 1-3, Day of the Tentacle, Sam & Max, ...), many of Sierra's AGI and SCI games (such as King's Quest 1-6, Space Quest 1-5, ...), Discworld 1 and 2, Simon the Sorcerer 1 and 2, Beneath A Steel Sky, Lure of the Temptress, Broken Sword 1 and 2, Flight of the Amazon Queen, Gobliiins 1-3, The Legend of Kyrandia 1-3, many of Humongous Entertainment's children's SCUMM games (including Freddi Fish and Putt Putt games) and many more. The project mailing lists have been moved to http://lists.scummvm.org The project tracker has been moved to https://bugs.scummvm.org
Weasel Reader is a document reader for Palm OS. It is Free Software covered by the GPL. It uses a document format called zTXT which is smaller than the PalmDOC format, but also reads PalmDoc files.
Simple plugin based dictionary program for Symbian cellular phones.
Multilanguage on-screen keyboard for PocketPC (Windows Mobile)
RTK is a cross-platform C++ GUI toolkit - optimised, stable, and robust. It\'s easily adoptable for any kind of software development.
XMMS for embedded / pocket devices, like sharp zaurus and compaq ipaq with QT/Embedded gui plugin, instead of the original gtk one (which is not available on the sharp zaurus out of the box)