Coherent (1994) 0 Unix

Coherent, from Mark Williams Company, was a compact high speed Unix clone that was ported to a number of architectures including IBM PC.

• 4.x

IBM Communications Manager/2 (1993) 0 Server OS2

Communications Manager/2 is a server component for OS/2 1.3 that provides connectivity with IBM mainframes and acts as a gateway for OS/2, DOS, and Windows clients.

• 1.0

Microsoft Network Driver Development Kit (1990) 0 DOS OS2

This is a set of development tools used to create network drivers for DOS and OS/2.

• 2.x