360desktop!

Dexpot turns your monitor into up to 20. It creates and manages virtual desktops and enables you to work far more efficiently and comfortably with many simultaneously opened windows on Windows 95/98/ME and NT4/2000/XP/2003/Vista (incl. x64).

VirtuaWin is a virtual desktop manager for the Windows operating system (Win9x/ME/NT/Win2K/XP/Win2003/Vista/Win7/Win10). A virtual desktop manager lets you organize applications over several virtual desktops (also called ‘workspaces’). Virtual desktops are very common in Unix/Linux, and once you get accustomed to using them, they become an essential part of a productive workflow.

Desktops allows you to organize your applications on up to four virtual desktops. Read email on one, browse the web on the second, and do work in your productivity software on the third, without the clutter of the windows you’re not using. After you configure hotkeys for switching desktops, you can create and switch desktops either by clicking on the tray icon to open a desktop preview and switching window, or by using the hotkeys.

WindowBlinds is a computer program that allows users to skin the Windows graphical user interface. It has been developed by Stardock since 1998, and is the most popular component of their flagship software suite, Object Desktop. It is also available separately, and as an ActiveX/COM component called DirectSkin. Now in its sixth version, it supports alpha blending effects similar to the compositing of Windows Vista, but on Windows XP.

Cairo Shell is a replacement shell for the Microsoft Windows operating systems. Like other shell alternatives, it replaces the default Windows Shell. Cairo Shell will be free to download and use when it is released.

KWin is a window manager for the X Window System, and is in the process of becoming a Wayland compositor. It is an integral part, and the default window manager of the Plasma Workspaces, but it can also be used on its own or with other desktop environments.

Emerge Desktop is a replacement Windows "shell" (the desktop environment normally provided by Windows Explorer) for Windows 2000 and above. In order to replace Windows Explorer as a shell, it provides a system tray (the area that collects the icons collected at the lower right corner in Explorer), called emergeTray. It will also provide access to the users programs (normally accessed with the Windows "start" button) via a right-click on the desktop, via emergeCore.

bug.n is a tiling window manager add-on for Microsoft Windows. It is written in the scripting language AutoHotkey.What it can do

LiteStep is a replacement desktop interface for Windows.

Virtuoz was designed to be a minimal and robust program that allows to have more than one desktop on Windows. It was inspired by Sysinternals Desktops, but uses a different approach, which doesn’t impose the limitations which Desktops is bound to.

GiMeSpace Desktop Extenders are scrolling virtual desktop managers and the only virtual desktop/window managers that give you seamless unlimited desktop space. New since version 2 is that you can now also resize your windows without any limitations. You can have for example a window that is 16000x16000 pixels wide. No screen will ever have that resolution!These programs make the panning (pan and scan) function that so many users liked in windows XP available for windows Vista and Windows 7. But now in a more powerful and flexible way!New since version 2.1 is that you can limit the size of your virtual desktop to the space that is used by your application windows. If you use only the space within you visible screen you will not even notice that GiMeSpace is running!All versions require windows XP or later versions except the 3D version that requires Windows Vista or 7 with Aero theme. 64bits is supported since version 2.2. »

Talisman Desktop is a configurable Windows shell replacement introduced in 1997 by Lighttek Software. It is available in a number of languages including English, French, Spanish, Swedish, Portuguese, Russian and Italian. Talisman Desktop is shareware, available as a free trial download that expires in 30 days. The registration fee for continued use is 25 USD.