goScreen!

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.

WindowsPager is a desktop-switcher/pager for Windows to manage virtual workspaces/desktops. It will integrate smoothly into the desktop panel.

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.

TotalSpaces provides a grid of spaces on OSX Lion

Virtual Dimension is a free, fast, and feature-full virtual desktop manager for Windows platform. The main goal of this open-source project is indeed to enhance the Microsoft "Window Manager" up to the level of usual Unix Window Manager, by providing virtual desktops, as well as some additional features, like always on top, window shading...

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.

Brings Mac to Windows.

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. »

mDesktop is a lightweight application that allows the user to utilize multiple virtual desktops. Also, mDesktop integrates with Hotcorners. mDesktop currently supports up to ten virtual desktops.

360desktop is free software that extends Windows as a 360 degree workspace, plus an online environment for creating interative 360 degree wallpaper, with a gallery and a widget platform, for sharing your favorite 360's with everybody.

Sawfish is an extensible window manager using a Lisp-based scripting language. Its policy is very minimal compared to most window managers. Its aim is simply to manage windows in the most flexible and attractive manner possible. All high-level WM functions are implemented in Lisp for future extensibility or redefinition.

DeskSpace is a 3D desktop visualisation tool, allowing you to seamlessly switch between 9 desktops.

The purpose of this application is to provide a system to group applications. This is in aid of providing a solution to the common problem of having a cluttered task-bar. The Multi-Tabber application provides easy and efficient way of group and organizing open application on your task-bar.