GhostWin!

eXtra Buttons lets you add up to 10 additional buttons to the title bar of each window, which allow you to minimize the window to the tray, keep it on-top, send it to the background, adjust the window's transparency and more. There are three options for minimizing windows, you can add them to the system tray as icon, add them to a common tray icon (launch menu) or minimize them as icons to your desktop, keeping your system tray and taskbar less cluttered. If you don't need all these options, you can choose to remove the buttons you don't want. All options are also available if you right-click on the title bar of a window. eXtra Buttons works with all Windows Explorer windows and many third party applications. »

a tiny application that adds "Priority", “Transparency”, “Always On Top” and “Minimize To Tray” to the windows control menu.

Chameleon Window Manager will allow you to control the windows of your programs using customizable buttons added to the title bars of the windows (Always on Top, Minimize to Tray, Minimize to Caption, Specify Transparency, Position window at left/right of screen).The interface supports skins and is very easy to use.

SmartSystemMenu extends system menu of all windows in the system. It appends next custom items to menu:

PowerMenu is a small application that some extra menu items to the windows control menu in addition to the standard "Close", "Maximize", etc options. The extra menus are: Priority, Always On Top, Transparency and Minimize To Tray.

Small little program that allows Windows 2000/XP users to make any window transparent. Right-click on any window or press the keyboard shortcuts (Control + Shift + [0-9]) to make any window transparent. Its that simple.Requirements:In order to run Glass2k you would need the following:- Windows 2000/XP with 64+ MB RAM & 400+ Mhz CPU- Visual Basic 6 runtime dlls- A fast graphic card with 8 MB or more onboard RAM will help

Moo0 WindowMenuPlus lets you have extra useful menus in every windows "system window menu". Its the menu that you can access through right-clicking on any windows title bar or taskbar button. This tool can add extra menus there such as "Keep on Top", "Transparency Adjustment", "Process Priority Adjustment", "Various Information about the Program" and so forth. Also, you can configure not to show some menus that you dont use. You can enjoy only useful menus that you want. »

xNeat is a windows enhancement utility. With the free version you can change any windows transparency, hide it, make it always on top, send it to tray, change the process/thread priority, Shuffle the taskbar etc.

TopMenu is a functionality clone of PowerMenu, but designed to be compatible with Windows 7 and 64-bit systems.

Adjust the transparency of your active and inactive windows, taskbar, and desktop with this small application, which suffers from a minor performance glitch. Ghost-It places an icon on your system tray, with options to independently configure the transparency levels of your active window and inactive windows. It comes with a fade effect option and you can decide if you'd like a warning before the transparency of the taskbar and desktop are adjusted. We like that we can define a hot-key combination for activating the window under the cursor. Once you've made those choices, pick Ghost from the menu to put this freeware to work. To end the effect, select UnGhost or UnGhost All. In our tests, however, we had difficulty accessing the elements on our toolbar once its transparency faded. Despite that issue, users who often work with multiple windows should try this free tool for easy modification of windows' visibility. »