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').
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Sysinternals Desktops - Desktops allows you to organize your applications on up to four virtual desktops.
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
9Desks - up to nine virtual desktops
Listary - Listary is a revolutionary search utility for Windows