Icon-Only task manager is a task manager available in KDE 4.8 by default, so you no need to install any thing. Just checkout the widgets and it will be there. What it have and why it is different from task manager?, as from its name, it is just an icon only task manager. The good thing i found in this new version is that we can make the icon for an application stay there after closing it. That means, that the application icon will be available at the task bar, if enable the settings for that specific icon. You can move the icons and re arrange its positions, and after moving them according to your taste, it is advisable to lock the Launchers. Just right click on the bar and choose ‘Lock Launchers’, so doing that, your icons will be locked and cannot be re arranged even by a mistake. It have many options in the settings to change its behavior, look and feel(even can make it like unity launcher) etc. In short, it is a nice, complete and simple dock. The best thing about it is, that we can add widgets, system tray, kickoff menu etc beside it(like in the screen shots below). Check out the screen shots of it in action. Try it out, i am sure you will love it.