KWin is a free and open source window manager and is the default in KDE. It is a powerful, highly customizable window manager with a plethora of both aesthetic and nuts and bolts features. With the release of KDE 4, the developers added 3D desktop effects, but they also carried over many customization features from KDE 3. Here are some of the window-specific settings that you can use in KWin.

There are two ways to access Window Specific Settings. One is to right click on the title bar of the window you want to configure, click “Advanced“, and click “Special Window Settings“. The other is to start System Settings, click the “Window Behavior” button, and then click “Window-Specific“. From there just click “New…” to make a new rule.  In the second method you will have to manually specify the name of the window or click “Detect Window Properties” and click on the window you want to configure.

Many KDE 3 users depended on Krun, a simple yet effective application used to execute commands. Executed simply by pressing “Alt-F2″, it was much easier to start applications using it, rather than navigating through a launch menu or opening a terminal window. The only catch with Krun was that you had to know the exact name of the command you intended to launch.  With the advent of KDE 4, that has all changed.

Krunner operates independently of the Plasma desktop system as a standalone application. It includes a ton of features that make it useful beyond simple command launching.  It has retained many of the features present in KDE 3 and greatly expanded them. We would fail to do it justice if we did not give it a top ten list.

KDE provides users with the tools to run software automatically using two features: Autostart and Task Scheduler (formerly called KCron). These tasks can be initiated immediately prior to KDE startup, during KDE startup, or scheduled at anytime: daily, hourly, weekly, or even every five minutes. Both of these features were present in KDE 3. Autostart programs could be dropped into the ~/.kde/share/autostart directory, and automated programs (cron jobs) could be created through a standalone application called KCron.

With KDE 4, Autostart and KCron are now both integrated into System Settings. To start either one, simply click on the K menu and then click System Settings. Next, click the “advanced” tab. Under the Advanced User Settings section, you should see Autostart, and under the System section, make sure that you see Task Scheduler. On my Kubuntu system, Task Scheduler was not installed, so I had to start kpackagekit and install the kcron package.

When Google Gadgets were released for Linux, many people once again praised Google’s support of free and open source software, but there was just one problem. The two major desktop environments for Linux, GNOME and KDE, both already had desktop widget components that were better integrated into their overall desktops. Fortunately, the Google developers were well aware of this and built in the interoperability that would allow the GNOME and KDE developers to seamlessly integrate the two.

With the release of KDE 4.2, Google Gadgets became fully integrated into Plasma. You can add them to your desktop with a few clicks of your mouse, unless you happen to be a Kubuntu user. For reasons that are outside the scope of this article, Kubuntu developers decided to remove the Google Gadget code from Plasma.  Being the stubborn hackers that we are, however, we are going to get them back.  This will require a little compiling of software, but I will walk you through each step.

You would be hard-pressed to go anywhere or even watch television without hearing some reference to “Twitter”, “tweets”, or “tweeting”.  From your cousin in Iowa to Shaquille O’Neal, all types of people from all walks of life have taking a liking to Twitter.

Whether or not Twitter will become a technological standard as email or just a passing fad, remains to be seen. What is clear, however, is that if you want to use Twitter while it is hot, you will probably want some type of client so that you do not always have to open your web browser and go to Twitter.com.

For KDE there are a few options, but there is one that I have found to be superior to them all.  Keep reading, or if Twitter has convinced you that you can only process 140 characters of information at one time, scroll to the end of this article.

One of the most innovative and simultaneously controversial features of KDE 4 is the Plasma widget, Folderview. Simply put, it allows a user to display the contents of a file system folder within a widget on the desktop.

Beyond just displaying files on your computer, Folderview can be used to launch applications, display remote file systems, filter large folders for particular types of files, or serve as a traditional desktop.