App Switch - App Switch is a small utility app that is ment for mutiple display users.
Dexpot - If you don't have Dexpot yet, the new update makes it a must-have tool for Windows, adding a ton of features to your desktop that you never knew you wanted.
rcmd - rcmd makes app switching instantaneous!When you have a lot of apps open, finding and switching to them might feel too slow using Command-Tab or the Dock.Hold down the right side |⌘ command| and press the first letter of the app name to focus it.
VirtuaWin - 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').
Command-Tab Plus - Command-Tab Plus - Powerful and Customizable Applications and Windows Switcher for Mac OS X.
Sysinternals Desktops - Desktops allows you to organize your applications on up to four virtual desktops.