Archie, no not the comic strip figure, but the Internet tool.  Archie is a huge database of available files on the Internet.  It is by no means a complete list but it is an accurate list.  Archie is used to locate a particular file on the Internet.  Instead of logging into serveral servers, listing directories and  hunting down the file, you can just ask Archie.  And Archie will present you with a list of which servers have the file, and which directory that file is in.