Is a new version of the application "Minimizer" (https://github.com/XOWN3RRX/Minimizer)

In the application a DLL from the "Greenshot" application is used to be able to capture an preview thumbnail. (https://github.com/greenshot/greenshot)

Spyzer is an application that allows you to view several applications that are minimized in a more compact way. Allows instant switching to the chosen application that is captured in "SpyForm".

You can spy on as many applications as you want, as long as the applications are not in full screen mode.