System 1.0 was the first operating system GUI developed for the Macintosh. The GUI made use of a mouse, it had a built-in installer and help system and it didn’t use icons. This system was targeted towards big corporations and came with a high price tag. Visi On was the first desktop GUI developed for the IBM PC. There were upgrades to Lisa OS, Lisa OS 2 in 1983 and Lisa OS 7/7 3.1 in 1984, that upgraded the system itself, but not the graphical user interface. Unfortunately this workstation didn’t last, it was killed by Apple’s Macintosh operating system that was more affordable.

It was developed by Apple with the intention of being a document processing workstation. It was known as “The Xerox Star”, later renamed “ViewPoint” and later again renamed to “GlobalView”.Īpple Lisa Office System 1 (released in 1983)Īlso referred to as Lisa OS, which in this case is short for Office System. This was the first system that was referred to as a fully integrated desktop computer including applications and a GUI.