Once upon a time, TCP/IP was not the preferred networking protocol for any operating system. Then Peter Tattam released a shareware version of TCP/IP stack that worked on MS Windows ™. I spent many hours making Windows TCP/IP work properlyand using Trumpet Winsock to get connected to the Internet for the first time in 1992. In my opinion, his shareware is a key factor in getting the Internet started by delivering a working IP protocol stack.
And yet, very few people ever paid for the software.
