Wikipedia
Simtel
Simtel, sometimes cited as Simtelnet, was an important long-running archive of freeware and shareware for various operating systems.
The Simtel archive had significant ties to the history of several operating systems: it was in turn a major repository for CP/M, MS-DOS, Microsoft Windows and FreeBSD. The archive was hosted initially on TOPS-20, then FreeBSD servers, with archive distributor Walnut Creek CDROM helping fund FreeBSD development. It began as an early mailing list, then was hosted on the ARPANET, and finally the fully open Internet.
The service was shut down on March 15, 2013.