In the context of popular things like HTTP and SMTP, yes, it was mostly Unix/BSD/NeXT[0][1]. Obviously the entire history of the Internet is a different story.

In the context of popular things like HTTP and SMTP, yes, it was mostly Unix/BSD/NeXT[0][1]. Obviously the entire history of the Internet is a different story. [0] https://en.wikipedia.org/wiki/World_Wide_Web#/media/File:NeXTcube_first_webserver.JPG https://en.wikipedia.org/wiki/World_Wide_Web#/media/File:NeX... [1] https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol#Original_SMTP https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol#...