There used to be a lot of mirrors for masive archive of freeware and shareware software called Simtel. In 2013 it went offline and most of FTP mirrors went offline over time too.

Here is list of those FTP mirrors that still work and have at least portion of original FTP server:

ftp://ftp.bu.edu/pub/mirrors/simtelnet/

ftp://ftp.funet.fi/pub/msdos/Simtel/pub/simtelnet/