When DragThing was finally left behind - after 24 years of service - by macOS Catalina’s lack of support for 32-bit apps, I knew I’d miss many of its features. Siracusa says he wrote SwitchGlass to replace a similar feature offered by DragThing: SwitchGlass has a nicely designed settings window. Instead, its interface is exposed though an icon on the right side of the macOS menu bar at the top-right corner of the screen. Hold down Command while clicking an app icon to reveal the app in the Finder.Drag one or more files onto an app icon to open those files with the app.Right or Control-click an app icon to pull up a menu from which you can show/hide it.Hold down Shift while clicking an app icon to bring just one its window to the front.Click an app icon to bring all windows from that app to the front.Here’s everything you can do with SwitchGlass: But if you’re a power user who prefers to use a mouse or trackpad to switch apps, then you should give SwitchGlass a try. Needless to say, you could just ignore SwitchGlass and continue using macOS’s default app switcher that doesn’t offer many customization options. It cannot appear in different positions and sizes on different displays, and it always brings all windows from an app to the front when an app icon is clicked. The Dock is also centered on the edge of the screen and has limited appearance options. But the Dock also may contain other things: files, folders, recent (but not currently running) apps, plus the trash can. The macOS Dock does show an icon for each running application and allows apps to be brought to the front and hidden. Siracusa went on to explain how SwitchGlass is better than using the standard macOS Dock. Many of these behaviors are configurable, as per the official FAQ. The software can be configured to bring one or all of an app’s windows to the front and you can use it as a drag-and-drop target to open files, just like with the default macOS app switcher. SwitchGlass brings a dedicated app switcher with customizable appearance, size and position on each attached display separately, including hiding the app on selected displays. MacOS provides no user-facing options for adjusting the appearance of the app switcher palette that pops up upon holding the Command – tab keyboard combo. SwitchGlass is a new project from John Siracusa which brings a dedicated application switcher to the Mac with tons of customization options.