Sometimes a lot of deskop clutter can hide a window (eg, open file, programs, files-explorer, dialogs)

DeskAngel is described as 'Enhancement tool for Windows desktop. It is simple, portable and totally free. It contains following features:' and is a Window Manager in the os & utilities category. There are more than 25 alternatives to DeskAngel for Windows, PortableApps.com and File Explorer. The best DeskAngel alternative is GridMove, which is both free and Open Source. Other great apps like DeskAngel are KDE Mover-Sizer, DM2, Nimi Visuals and Plumb.
Sometimes a lot of deskop clutter can hide a window (eg, open file, programs, files-explorer, dialogs)

reSizer is a system utility that enables keyboard shortcuts to focus, move, resize and change other window properties in a fast and intuitive way without even touching the mouse.

WinNumpad Positioner is a lightweight and snappy Windows management tool that repositions Windows using simple Windows Key + Numpad combinations.

Make all windows but the active one transparent.
Features:

NuonSoft ShellEnhancer is a powerfull utility designed to enhance the default shell of Windows. Learn more about ShellEnhancer.
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:

Aero Shake is a new feature for windows 7. It allows you to minimize and restore the windows that are open in your desktop. This awesome and practical trick allows you to focus in the windows that you have chosen.

WinMover is an application for moving windows more comfortable with the the mouse in Microsoft Windows®. It is fully customizable and can mimic the behaviour of many window managers for UNIX and Linux.

Make Windows in caption bar size and recover again. Version 1.5 available. Version 1.1 download is compromised.


Splitview is the most popular commercial alternative to DeskAngel.