AltTab brings the power of Windows’s “alt-tab” window switcher to macOS.

Features

Switch focus to any window
Minimize, close, fullscreen any window; Hide, quit any app
Customize AltTab appearance (pick one of 3 styles, then customize further)
Custom trigger shortcuts with almost any keys
Blacklist apps you don’t want to list or trigger AltTab from
Light and Dark Appearance
Drag-and-drop things on top of window thumbnails
Accessibility: VoiceOver, sticky keys, reduced transparency, etc