KDiveMaster is an electronic logbook for SCUBA-divers developed for KDE 3. The project was started because of the need for a program that could read out data from Aladin Dive Computers, but the project's goal is to become a fully featured logbook application. KDiveMaster is in an early state of development but already quite usable.
libUTL++ is a C++ class library that includes a wide range of highly re-usable functionality and abstractions. It uses templates in some places, but generally favors an object-oriented design. The library covers functionality in areas such as containers, text processing, memory allocation, date/time manipulation, stream I/O, data compression, and others. It also includes abstractions to facilitate common tasks such as object copying, comparison, serialization, etc.
Tabatha is a GTK2 popup menu for tablet PCs, handhelds, and other frequently changed desktops. It can be called with a single keypress, and allows system configurations (power, X display, networking, etc.) to be changed with a single button push. New buttons are easily configured through a simple XML file, with no programming necessary.