wget

Network Utilities Web Applications

GNU Wget is a free software package for retrieving files using HTTP, HTTPS and FTP, the most widely-used Internet protocols. It is a non-interactive commandline tool, so it may easily be called from scripts, cron jobs, terminals without X-Windows support, etc. GNU Wget has many features to make retrieving large files or mirroring entire web or FTP sites easy, including resuming aborted downloads, recursive fetching, HTTP and cookie authentication, and lots more.

http://www.gnu.org/software/wget/

Platforms
Interfaces
Licenses