Berusky is a logic game that is based on an ancient puzzle named Sokoban. The old idea of moving boxes in a maze has been expanded with new logic items such as explosives, stones, special gates, and so on. In addition, up to five bugs can cooperate and be controlled by the player.
Eliot is a Scrabble game. It offers four different game modes (standard game, duplicate mode, training mode, and arbitration mode), to play alone, against the computer, or with other players. Several variants are also available (joker, explosive, 7 among 8). Eliot supports different dictionaries, and provides fast and powerful search tools (including search by regular expressions).
Tiled is a general purpose tile map editor. It's built to be easy to use, yet it is capable of catering to a host of varying game engines, whether your game is an RPG, platformer, or Breakout clone. Tiled supports plugins to read and write map formats other than its own map format.
Omnitux aims to provide various educational activities based on multimedia elements (images, sounds, and text). Possible activity types are associations, puzzles, counting activities, etc. There is support for multiple languages and multiple screen resolutions (by using SVG vector graphic files and high quality bitmap files). Omnitux activities are described in XML files, so it is possible to create new activities without modifying the program.
Gambatte is an accuracy-focused, cross-platform Game Boy and Game Boy Color emulator. It is based on hundreds of corner case hardware tests, as well as previous documentation and reverse engineering efforts. The core emulation code is contained in a separate library back-end (libgambatte) written in pure platform-independent C++. There is a GUI that uses Trolltech's Qt4 toolkit (gambatte_qt), and a simple command-line SDL front-end (gambatte_sdl). The GUI front-end contains platform-specific extensions for video, sound, and timers.