Scroll past the crass ads to reach FTP Search's prompt (http://www.ftpsearch.com). This site provides several options for displaying search results, but they don't add much value. The odd thing about this site is, it seems to use the Filez search engine rather than its own. Even odder, each search generated more than 100 matches.
That doesn't mean the matches were accurate. "Restaurant" produced mostly FAQs about restaurants, not software. "Compression," however, did list what appeared to be compression utilities, but not PKZIP or WinZIP. "Pyramid" gave a variety of results, including one for an Alan Parsons Project album.