textfiles.com now offers the contents of entire BBS file and shareware CD-ROMs for download. Some of these are quite famous.
textfiles.com is also in the process of archiving archive CDs that were common on BBSes in the 1990's. These often contained shareware, text files, applications, graphics, chiptunes, and other such things that filled out our collections back in the day. If you poke around a little you might find something you've not seen before (like an archive of Atari software).