The Enterprise Volume Management System (EVMS) Project has the goal of providing unparalleled flexibility and extensibility in managing storage. It represents a new approach to logical volume management, as the architecture introduces a plug-in model that allows for easy expansion or customization of various levels of volume management....

Merkaartor is an OpenStreetMap mapping program. Merkaartor focuses on providing a visually pleasing but performant editing environment for free geographical data.

DirectFB is a thin library that provides hardware graphics acceleration, input device handling and abstraction, integrated windowing system with support for translucent windows and multiple display layers, not only on top of the Linux Framebuffer Device.
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The database access library for C++ programmers that provides the illusion of embedding SQL in regular C++ code, staying entirely within the C++ standard.

KPhotoAlbum lets you index, search, group and view images by keywords, date, locations and persons. It provides a quick and elegant way to lookup groups of images when you have thousands of pictures on your hard disk.

The Common Toolkit (CTK) contains a collection of Qt based widgets for GUI development. Some advanced widgets handle DICOM, scripting (PythonQt) or VTK.
In addition to widgets, CTK offers different development solutions such as a plugin framework, an automatic Qt testing framework and software management(useful CMake macros)....

The aim of Adonthell is the creation of a 2D, graphical, single player role playing game and the required engine.
Main emphasis of the game lies on good gameplay rather than on realism; it will be a well-balanced mixture of fast-paced realtime combat, head-cracking puzzle elements and extensive dialogues....

Cataclysm: Dark Days Ahead is a roguelike set in a post-apocalyptic world. Surviving is difficult: you have been thrown, ill-equipped, into a landscape now riddled with monstrosities of which flesh eating zombies are neither the strangest nor the deadliest....

CodeLite is an open-source, cross platform IDE for the C/C++ programming languages. CodeLite is known to work on various OSs including:

Windows (XP SP3, 7, 8)
    Linux (Debian, Ubuntu, Fedora, OpenSUSE)
    Mac OSX (10.5.8)
    FreeBSD (installer not provided)...

Quazaa is a cross platform multi-network peer-to-peer (P2P) file-sharing client inspired by Shareaza which will support Gnutella2, Ares, eDonkey2000 (eMule), HTTP, FTP, and BitTorrent. Using the Qt software development kit.