OS/2-tan

Operating System/2 (OS/2) was originally developed as a joint project between IBM and Microsoft. It's intention was to replace the antiquated Disk Operating System (DOS) as the operating system of choice, which by that time, Microsoft and IBM saw was quickly becoming obsolete. OS/2 was born, initially as a 16-bit, command-line based operating system, which IBM coded from the ground-up as the personal computer equivalent of a mainframe system, with all of the advanced features previously existing only on those high-end machines. Microsoft worked closely with IBM with developing its GUI, up t...