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').
ServiceNow - ServiceNow automates and manages global enterprise service relationships. Create a single system of record for enterprise services, automate manual tasks, consolidate legacy ITIL systems.
Sysinternals Desktops - Desktops allows you to organize your applications on up to four virtual desktops.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
9Desks - up to nine virtual desktops
ManageEngine ServiceDesk Plus - Over 100,000 organizations, across 185 countries, trust ServiceDesk Plus to optimize IT service desk performance and achieve high end user satisfaction.