JDownloader

JDownloader is a free, open-source download management tool with a huge community of developers that makes downloading as easy and fast as it should be. Users can start, stop or pause downloads, set bandwith limitations, auto-extract archives and much more. It's an easy-to-extend framework that can save hours of your valuable time every day!

Homesite : http://jdownloader.org/

Choose your operating system:

Windows :
Downloadserver #1 jdownloader.org Download Windows WebInstaller JD1(recommended)

Linux :
Downloadserver #1 jdownloader.org Download Installer (chmod +x jd_unix_0_9.sh)
Downloadserver #2 jdownloader.org Download (MULTIOS Zip)
Downloadserver #3 launchpad.net Download (Ubuntu Package)

Mac :
Downloadserver #1 Mac OS X 10.5 Leopard or lowerDownload (DMG)
Downloadserver #2Mac OS X 10.6 or higher (JD 2 BETA)Download (DMG)

Java :
Downloadserver #1 jdownloader.org Download (MULTIOS ZIP without Installer)

JD Developer Server