LTSP is described as 'The Linux Terminal Server Project adds thin-client support to Linux servers. LTSP is a flexible, cost effective solution that is empowering schools, businesses, and organizations all over the world to easily install and deploy desktop workstations' and is an app. There are five alternatives to LTSP for a variety of platforms, including Linux, Mac, Windows, Android and iPhone apps. The best LTSP alternative is NoMachine, which is free. Other great apps like LTSP are ThinLinc, Userful Multiplatform, DRBL and openThinClient.