The GEOS Graphic Environment Operating System by Berkeley Softworks is an operating system specifically designed for the Commodore 64 and 128 computers. It includes features such as a graphical user interface, file management, and support for various programming languages. The GEOS operating system is stored on floppy 3.5" disks and is compatible with the Commodore 64c, Commodore 128, and Commodore 64 computers. With its English language interface, users can easily navigate and use the system to perform various tasks on their Commodore systems.