EF Commander Free
EF Commander Free for Windows is a file manager for the Windows desktop. If you've ever used and liked Norton Commander, you'll like this dual-windowed program. Multilingual.
http://www.efsoftware.com/sw/efcwt.zip - 590Kb - Download - Screenshot

Lucid
Lucid will add automatic transparency effects to any window. Adding a window is as simple as dragging an icon over it. Once a window is added to Lucid's list it will automatically switch between the user defined minimum and maxium transparency. Lucid uses the window's class name for... Lucid can be enabled and disabled quickly using its system tray interface.
http://www.xenossoftware.com/lucid/download.php - 340Kb - Download - Screenshot

SD WinHider
SD WinHider is the utility to quickly hide/restore your windows, as well as hide and restore system tray icons. Make your desktop space free for more programs! Features: * Hides/restores any window on your desktop; * Hides/restores system tray icons (like ICQ, AOL etc. ... You may use Alt+Up/Down arrows to show/hide application window; * Fast window hide (by pressing both left and right mouse buttons on window); you can turn this off in setup; * Can start with windows; * You can show/hide windows/icons just by 'turning on/off' them in interface; * You can activate manus for icons just by...
http://www2.sysdevsoftware.com/download/winhider.exe - 406Kb - Download - Screenshot

WinTopMost
WinTopMost can put topmost automatically any window and/or disable its X close button (window's top right corner). Main features : - Runs on Windows 95/98/NT 4. 0/Windows 2000. - Put allways on top any window or comme back to a "normal" (non topmost) window - Disable or enable X close button of... WinTopMost intercepts windows captions when programs are running (can intercept many strings and set topmost many windows). ... WinTopMost intercepts windows captions when programs are running (can intercept many strings and disable X close buttons of many windows).
http://peccatte.karefil.com/software/WinTopMost/WinTopMost.zip - 2Mb - Download - Screenshot

WinTiles Plus
Unleash the real potential of Windows. WinTiles is based on the idea that having many windows to look at is good, but having many windows you can use is great! Automatically organizes opened windows on your desktop in a customizable manner. Perfect for editing documents, instant messaging,... -Cascade/Tiles your desktop windows. ... -Rotate windows to choose best layout and increase window sizes! ... -Compare different views of data on a single screen. ... --Maximize productivity and increase efficiency.
http://www.wintiles.com/downloads/WinTilesInstall.exe - 2Mb - Download - Screenshot

WinTopMost Disable Close
WinTopMost can put topmost automatically any window and/or disable its X close button (window's top right corner). Main features : - Runs on Windows 95/98/NT 4. 0/Windows 2000/XP. - Put allways on top any window or comme back to a "normal" (non topmost) window - Disable or enable X close button... WinTopMost intercepts windows captions when programs are running (can intercept many strings and set topmost many windows). ... WinTopMost intercepts windows captions when programs are running (can intercept many strings and disable X close buttons of many windows).
http://peccatte.karefil.com/software/WinTopMost/WinTopMost.zip - 2Mb - Download - Screenshot

Softvoile Rubilnik
Softvoile Rubilnik allows you to easily switch between HTML-Editor and browser windows. If you create sites using php, perl or any other language for web development, each time you want to view the results of changes you have to do the following: * Save the made changes by pressing Ctrl-S. ... Now by clicking the hotkey (for example, F9), you quickly and easily switch between the windows you need. ... Probably, you will have to press Alt-Tab several times if you have a lot of windows open. ... ".
http://softvoile.com/download/softvoilerubilnik.exe - 69Kb - Download - Screenshot

JumpKeys Pro
A multi-function utility for programmers and power users. JumpKeys Pro uses hot keys for selecting (switching between), minimizing, and maximizing windows (including child windows in MDI applications), making windows Always On Top, storing text in a tabbed clipbook, accelerated text editing and... If you prefer, you can select tagged windows using the Ctrl key, Shift key, Windows key, or even with the numbers alone. ... Tagged windows are identified based on full or partial title. ... Also, you can assign a hot key to minimize windows, and assign a hot key to alternately maximize/restore...
http://www.brucegraham.net/shareware/download/jpro121.exe - 2Mb - Download - Screenshot

WiseDesktop
WiseDesktop is an award-winning virtual desktop manager for Windows with user-friendly interface and useful features. WiseDesktop creates four virtual desktops and only one is visible at a time. So, when you switch desktops, all visible application windows just disappear from the screen and from... Also you can set custom wallpapers for each desktop, move application windows from one desktop to another by drag'n'drop, keep an application window on all desktops, close an application window from the WiseDesktop main window, change the order of applications on the Windows taskbar etc.
http://wisedesktop.com/download/WiseDesktop.exe - 1Mb - Download - Screenshot

Plancoin
Plancoin allows you to hide selected windows in one keypress. It lets you set up two hot keys: one to hide the windows and show them back, and one to show the Plancoin Settings window. The program then runs in the background and responds to the hot keys. ... To determine which windows must be hidden, you have to set up a list of sentences. ... As Plancoin needs to run in the background all the time, it has been designed to use as few system resources as possible. ... In the Exclude mode, every window whose title does not contain any of the sentences will be hidden.
http://prdownloads.sourceforge.net/wistinga/plancoin-0.1.exe?download - 98Kb - Download - Screenshot