Use Alt + Tab to Cycle Through Open Applications

In Microsoft Windows, if you have a lot of applications running simultaneously, the corresponding taskbar buttons for these applications are increasingly jammed into the available taskbar space and become harder to identify. Only a small portion of the button caption for each application is displayed.
 
Choosing the desired application from such a cluttered taskbar can waste valuable time and reduce your computing efficiency You can get around this issue, and keep your fingers on the keyboard, by using the key combination, "Alt + Tab". Pressing Alt + Tab together will evoke a window that clearly displays the icons and captions of all open applications and lets you cycle through them with ease.