High Quality Content by WIKIPEDIA articles! Userful is a desktop virtualization company that provides zero-client products for education, VDI, digital signage and SMBs. The company develops software to create Linux-based virtual desktops that enable 20 or more users to simultaneously share 1 computer through ethernet. The company’s approach is similar to thin clients but promises better streaming video and audio performance at lower costs. Userful, based in Calgary, Alberta is a privately held for-profit company with resellers.