Perl 4.036 was the final release of Perl 4, on 5th Feb 1993. It came with 31 libraries, for example getopts.pl for processing command-line arguments. There were also many third-party libraries, written by Perl users around the world. These were collected together in various ftp sites. There wasn't any single master site. The big ones were funet.fi, metronet, coombs, and ?? The libwww-perl project