HideIt

HideIt is a simple tool that can help you better manage your daily PC activity by minimizing opened applications to the systray to make them non-intrusive and declutter the taskbar.
It doesnt contain customization options and doesnt implement keyboard shortcuts for performing this task. You should also know that it doesnt work for all windows (depending on the program).
There is no installation pack. You can save the downloaded executable file in any part of the hard disk or on a removable storage unit, in order to directly launch the tool on any computer with minimum effort. It doesnt modify Windows registry settings.
Once launched, it creates an icon in the taskbar notifications area and silently stays there while running, without interrupting your regular PC activity.
Although no instructions are listed, you can minimize the windows of active programs by right-clicking the "Minimize" button, instead of left-clicking, in order to open a small menu where you can click on the HideIt entry.
Its possible to hide multiple windows, restore them manually from the systray, or open the right-click menu of this utility to view a list with all minimized apps and restore any of them (or all).