I run the KDE desktop and have been wondering.. I minimize a window then can't find it. Once in a while I look away and don't know what I did to make it happen, but different windows of these applications I couldn't find will all form as if I hit alt-tab in Windows OS.

How do I pull this view up to see the apps running to navigate better and be able to get rid of apps I'm not using? This has been my only beef with Opensuse and I would like to use it a lot more if I can figure it out. Thanks in advance.