OS/2

OS/2 was an operating system originally developed jointly by Microsoft and IBM. After the release of Windows 3.0, Microsoft stopped all cooperation with IBM and IBM developed OS/2 on its own, starting with OS/2 2.0. OS/2 was later sold and renamed to eComStation.

Versions
IBM OS/2 1.0 IBM OS/2 1.1 IBM OS/2 1.1 Extended Edition IBM OS/2 1.2 IBM OS/2 1.2 Extended Edition IBM OS/2 1.3 IBM OS/2 1.3 Extended Edition IBM OS/2 2.0 IBM OS/2 2.1 IBM OS/2 2.11 IBM OS/2 Warp 3 IBM OS/2 Warp 4 IBM OS/2 Warp 4.5

Needs to be completed.