Make all windows but the active one transparent.
Features:
- User defined transparency level.
- Can ignore always ontop windows.
- Won't make parent windows transparent while children is active.

PowerMenu is described as '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' and is an app in the os & utilities category. There are more than 25 alternatives to PowerMenu for a variety of platforms, including Windows, Linux, PortableApps.com, File Explorer and Thunderbird apps. The best PowerMenu alternative is SmartSystemMenu, which is both free and Open Source. Other great apps like PowerMenu are MenuTools, RBTray, KDocker and Actual Window Manager.
Make all windows but the active one transparent.
Features:

Minime is a tool that allows you to minimize applications to the system tray using a simple hotkey. What makes this tool somewhat unique is that it keeps your system tray clean by minimizing all applications into a single tray icon.

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.



Simply double-click programs systray icon, and then left click the title of the window wanted to be Always on top.... Cool feature: Windows shake when set to stay on top, with the aforementioned method.
Clicky Gone allows you to hide your selected windows from view, this includes the taskbar button associated with the application. This utility particularly helps with protecting your privacy by hiding things like your browser with banking details up and someone walks in on you.





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.

Define zones that autosize windows dropped on them.
Features:



Stalonetray is a stand-alone system tray (notification area) for X Window System/X11. Working with virtually any EWMH-compliant window manager, it has minimal build and run-time dependencies (X11 lib only). Complete XEMBED support under development.

