Cakemail - Email marketing and transactional emails that deliver. Try it for FREE!
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').
Hatchbuck - SMB sales and marketing software
Sysinternals Desktops - Desktops allows you to organize your applications on up to four virtual desktops.
Salesfusion - Salesfusion provides an easy to use marketing automation platform that allows sales and marketing teams to be successful.
9Desks - up to nine virtual desktops