KDE is an alternate window manager/desktop that can be installed on Ubuntu, and comes standard with the Kubuntu linux version. KDE is a lot more robust than Ubuntu’s Gnome environment, and is well worth a try if you haven’t used it.
If you want to launch an application with just a few keystrokes, you can use KDE’s Katapult functionality to quickly find and start an application.
From anywhere, just hit the Alt + Spacebar key combination, and you should see this window pop up:
Start typing the name of an application…. I’m going to type Kon, because I’m looking for konsole…
All I have to do now is just hit enter to launch konsole. Oh how I love KDE !