Our Review:

Of the programs reviewed here, 4t Tray Minimizer Free is the only one that allows you to minimize programs to the system tray in multiple ways: either by using keyboard shortcuts or by clicking on additional buttons on the application's title bar. This feature alone makes it an attractive option for some people. It is highly configurable, easy to use and very intuitive.

Besides using this tool to minimize programs to the system try, you can also use it to roll up or down an open window and make a window semi-transparent.

The tool officially supports Windows XP through to Windows 7. Most basic features work in Windows 10 in my tests, but the default minimize button is overlapped with part of the tool's buttons.