KPackageKit is a graphical interface for packagekit. It is easy to use and shows only the necessary information to the user.
Packages can be searched by name, by description or by filename. Also you can choose categories to search in if the repository used supports that. Based on Qt4 it fits perfectly to the look and feel of the rest of the KDE 4 environment.
If you want to install or remove software packages on your system, KPackageKit is for you.