wget

Wget – The non-interactive network downloader

GNU Wget is a free utility for non-interactive download of files from the Web. It supports HTTP, HTTPS, and FTP protocols, as well as retrieval through HTTP proxies.

Download all deb packages from a page:

wget -r -l1 -erobots=off -A .deb http://de.archive.ubuntu.com/ubuntu/pool/main/u/ubuntu-wallpapers/