Mission Control is described as 'Formerly Exposé, is a feature of the macOS operating system' and is a Window Manager in the os & utilities category. There are more than 10 alternatives to Mission Control for a variety of platforms, including Mac, Windows, Linux, BSD and Xfce apps. The best Mission Control alternative is KWin, which is both free and Open Source. Other great apps like Mission Control are Contexts, Witch, SMBAct and Nimi Visuals.
KWin is a window manager for the X Window System, and is in the process of becoming a Wayland compositor. It is an integral part, and the default window manager of the Plasma Workspaces, but it can also be used on its own or with other desktop environments.
Switch between application windows effortlessly – with a click, a quick gesture, keyboard shortcuts or search; no matter how many of them you have open; even on multiple spaces & multiple displays.
Witch lets you access all of your windows by pressing a shortcut and choosing from a clearly arranged list of window titles.
SMBAct is the all-in-one cross-platform solution that allows you to keep your windows and applications well-organized and significantly simplify the process of interaction with them.
Adds eye-candy effects to windows (and start menu) like deformations (e.g: jelly windows - that makes moved window wiggle like being made from jelly; or fold - which hides windows by folding up horizontally, and unfolds when showing), physics (e.g.
With SpaceLauncher for macOS, you can launch or switch to an app by pressing a pre-defined key while holding down spacebar.
Experience Raskin's unique bird's eye view to browse and manage your pictures, presentations, PDFs…
Skippy-XD is a full-screen task-switcher for X11. You know that thing Mac OS X, Compiz and KWin do where you press a hotkey and suddenly you see miniature versions of all your windows at once? Skippy-XD does just that.
TopDesk radically reduces the time you spend switching between tasks by giving you the ability to quickly find the window you want from a thumbnail view.
WinFlip emulates Windows Vistas "Flip 3D" effect for Windows XP. Using the hotkey of your choice, you can find the window youre looking for in a fast, clean 3D interface.
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Mission control is used to manage and switch desktops ("spaces") where application windows live. Raskin appears to be for viewing files on your system and does not manage application windows at all.