Switch between windows
Including all applications in the window switcher makes switching between tasks a single-step process and provides a full picture of which applications are running.
Press Alt+Tab to bring up the window switcher.
Release Alt to select the next (highlighted) window in the switcher.
Otherwise, still holding down the Alt key, press Tab to cycle through the list of open windows, or Shift+Tab to cycle backwards.
Windows in the window switcher are grouped by application. Previews of applications with multiple windows pop down as you click through. Hold down Alt and press ` (or the key above Tab) to step through the list.
You can also move between the application icons in the window switcher with the → or ← keys, or select one by clicking it with the mouse.
Previews of applications with a single window can be displayed with the ↓ key.