There was a well known ftp site in the early 1990s called
simtel20.army.mil. It was mostly known as a repository for ms-dos
utilities, but it also had a collection of source code to various
user-contributed unix utilities. I just uploaded those to the Internet
Archive: https://archive.org/details/oak-unix-c--full-mirror-1999.12.14
There was a well known ftp site in the early 1990s
called
simtel20.army.mil. It was mostly known as a repository for ms-dos
utilities, but it also had a collection of source code to various
user-contributed unix utilities. I just uploaded those to the Internet
Archive: https://archive.org/details/oak-unix-c--full-mirror-1999.12.14