The Ray Tracing in One Weekend series of books
The Librum client application
Turn your PC into a very advanced MediaCenter/HTPC
Hotel Property Management with OTA channel support.
A modern ebook reader and library manager
DIY split-flap display
A personal database of your books on various media
Distributed "massively parallel" SQL query engine
RelaxChess, chess game that makes no search futher needed for a wow
Collaborative collection of C++ best practices
A Numerical System controlled by algorithms.
MCDB helps you to manage all of your electronic components.
libby is an open source library managing system
Cataloguer movies and serials
qtRehber is an address book