Website Downloader - Download source code from any website
HTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
CONV. - Convert YouTube video to MP3, GIF or MP4
SiteSucker - SiteSucker is a Macintosh application that automatically downloads Web sites from the Internet.
Image Cyborg - Download all images on a web page
GNU Wget - GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most...