JDownloader:
A versatile download manager that supports all popular
file hosts such as mediafire, rapidshare and megaupload.
Link grabber makes adding links easy.
Download here
Free Download Manager:
Supports bittorrent and flash video downloads from sites
like youtube. Has standard download manager features
as well as an upload manager and ftp support.
Download here
Flashget:
The normal download manager features with support for
HTTP, FTP, BT, MMS, RTSP. Program is light on PC
resources and can call antivirus to scan files.
Download here
Supports youtube, myspace and rapidshare downloads.
Light on system resources with support forIE, Firefox,
Maxthon and Opera.
Download here