Comment by mjevans
4 years ago
Back around Win 95 when they added networking it was based off of (IIRC) BSD's TCP stack and related tools. They were an optional 'third party' driver of sorts, but shipped by the first party. I'm not positive about WinNT or Win3.11 (for workgroups?)
I remember adding "trumpet winsock" to Win 3.x back in the day. Says '94 for that, and summer of '93 for NT 3.1 debut:
https://en.wikipedia.org/wiki/Trumpet_Winsock
https://en.wikipedia.org/wiki/Windows_NT_3.1