aria2 is a lightweight multi-protocol & multi-source, cross platform download utility operated in command-line. It supports HTTP/HTTPS, FTP, BitTorrent and Metalink.
aria2 has built-in XML-RPC interface. You can manipulate aria2 via XML-RPC interface.
Aria2 Download Manager is one of the best download managers ever developed for Linux. Really speeds up your download experience.
Link to Free Download (http://www.theinfostride.com/forum/index.php?action=downloads;sa=view;down=10)