WGET is a utility to retrieve files from the World Wide Web using HTTP and FTP, in batch mode. The recursive retrieval of HTML pages, as well as FTP sites is supported - you can use it to make mirrors of archives and home pages.
Re-getting incomplete files from where it left off works on servers (both HTTP and FTP) that support it.
http://hobbes.nmsu.edu/cgi-bin/h-search?key=wget
Source: OS/2 News and Rumors