Topic summary
IP stack
Extracted from the Wikipedia article Internet protocol suite.
Adoption
IBM, AT&T and DEC were the first major corporations to adopt TCP/IP, this despite having competing proprietary protocols. At IBM, from 1984, Barry Appelman's group did TCP/IP development. They navigated the corporate politics to get a stream of TCP/IP products for various IBM systems, including MVS, VM, and OS/2. Several smaller companies, such as FTP Software and the Wollongong Group, began offering TCP/IP stacks for MS-DOS and Windows. The first VM/CMS TCP/IP stack came from the University of Wisconsin.