KMago (KDE Multiple Automated Get Operations) is a download manager which works
as a frontend to GNU wget or with the KDE kioslaves.  KMago features: 

Drag'n'drop operations with other applications (Konqueror, Netscape, etc.)
 and between KMago widgets (including drop targets and a panel tray icon); 
Multiple prioritized downloads with a selectable priority policy; 
Transfers grouping; 
Multiple downloads control with priority and selectable priority policy; 
A download resume capability; 
Cookie and HTTP-related management offered by KDE I/O library; and 
The stability and reliability of the venerable GNU wget. 

WWW: http://kmago.sourceforge.net/