XQF is a GTK+ frontend for Qstat, a tool for querying first-person action game servers like Quake, Unreal Tournament, etc. It displays information about the servers and allows configuring and launching some of the games from it.

Gadu-Gadu is a Windows instant messenger, very popular in Poland. Kadu is a Qt5 client of Gadu-Gadu and XMPP for *nix systems.

You, as a bunny, have to jump on your opponents to make them explode. It's a true multiplayer game, you can't play this alone. It has network support.

Twpsk uses a soundcard to receive and transmit PSK31, an extremely narrow band HF-mode. PSK31 is a mode for keyboard QSO's. It offers narrow signal width and gives excellent results with low power and minimal antenna systems.

Dolphin is an emulator for two recent Nintendo video game consoles: the GameCube and the Wii. It allows PC gamers to enjoy games for these two consoles in full HD (1080p) with several enhancements: compatibility with all PC controllers, turbo speed, networked multiplayer, and even more.

TuxGuitar is a multitrack guitar tablature editor and player written in Java-SWT. It can open GuitarPro, PowerTab and TablEdit files.