Switcheroo simplest and fastest ALT-TAB replacement

Switcheroo
The simplest and fastest ALT-TAB replacement.
https://github.com/kvakulo/Switcheroo
https://alternativeto.net/software/switcheroo/about/

What is Switcheroo?
Switcheroo is for anyone who spends more time using a keyboard than a mouse. Instead of alt-tabbing through a (long) list of open windows, Switcheroo allows you to quickly switch to any window by typing in just a few characters of its title. It's inspired by Emacs's IDO mode buffer switching and JetBrains' ReSharper.

How to use it?
The default key binding for Switcheroo is Alt + Space. Pressing this key combination will bring up the Switcheroo window, which lists the titles of every open window.
Typing filters the list.
Press Enter to switch to the selected window.
Press Ctrl + Enter to close the selected window.
The key binding can be changed by right-clicking the notification icon in the Windows notification area and choosing "Options".

To accept an app to PortableApps, the following questions are typically required:

Is the app portable? i.e., can it run from a USB drive or a cloud storage service without requiring installation on the local computer?
Here how it seems installed portable:
https://community.chocolatey.org/packages/switcheroo.portable

Does the app have an open source or freeware license? PortableApps only accepts apps with licenses that allow for redistribution without additional permissions or fees.
GNU GPL v. 3

Does the app have any dependencies or bundled software that are not portable or violate the PortableApps Platform license agreement?
Don't think so ...
Current developer: Regin Larsen
https://github.com/kvakulo

Has the app been tested for compatibility with the PortableApps Platform and verified to work correctly?
Dunno

Does the app adhere to the PortableApps Platform guidelines, such as using relative paths and not modifying the registry or system files?
Don't think so ...

Does the app have any potential security risks or violate the PortableApps Platform security guidelines?
Don't think so ...