I have written a post about Slingshot Launcher and how to configure it on XFCE. Slingshot is an application which can display fullscreen menu. Slingshot was originally developed by Elementary OS team. If you are using KDE desktop, you can perform such task by using Takeoff. Takeoff is a plasma widget which inspired in the aspect of Slingshot, and of course, it can display menu in fullscreen mode just like Slingshot.

Install Takeoff on various Linux distributions
Add this PPA to your system:
  • sudo apt-add-repository ppa:ferramroberto/oneiricextra
  • sudo apt-get update
  • sudo apt-get install takeoff

Fedora 15
Download and install this packages:

Install Takeoff from the official repository:
  • sudo zypper addrepo http://download.opensuse.org/repositories/KDE:Extra/openSUSE_11.4/KDE:Extra.repo
  • sudo zypper refresh
  • sudo zypper install plasmoid-takeoff
For other distributions such as Arch Linux, Chakra Linux, or download source code for manual compiling, please click here.

Once Takeoff successfully installed, add the widget to your KDE desktop!

Enjoy :)