Kadu project was started in 2001 as a simple KDE API try-out. Eventually, it became the most popular Gadu-Gadu client for Linux and other Unices or MacOSX.
Kadu depends on Qt library version 3.x. Beginning with version 0.3.3 it does not require the KDE libraries and can be used with other window managers. Kadu supports Gnome and Window Maker as well. The heart of Kadu is the libgadu library (its role being handling the network layer).
Kadu is a property of Kadu respective authors, vendors and developers. You can download Kadu for your hardware. If you want to use Kadu for other purpose, Please contact the authors, vendors and developers of Kadu.