PCLinuxOS 2014.04 Officially Released, Is Based on KDE 4.12.3 and Linux Kernel 3.12.16
PCLinuxOS comes with numerous flavors, but the default one is actually KDE. Just like Fedora, which uses GNOME, and Linux Mint, which uses Cinnamon, the PCLinuxOS Linux distribution is based on KDE.
Unlike other distributions that also integrate KDE as the default desktop environment, PCLinuxOS provides a customized experience. Most developers and maintainers out there don't bother too much with KDE and they usually choose to offer a KDE desktop that resembles the stock one. On the other hand, the PCLinuxOS developers customize the desktop to quite an extent, and it looks unique and is easily identifiable.