JDownloader a.k.a JD
One of the best download managers, JD can be used to download from rapidshare, megaupload, filesserve, hotfile and numerous other sites.
Jdownloader install on Ubuntu 10.04
sudo add-apt-repository ppa:jd-team/jdownloader
sudo apt-get update
sudo apt-get install jdowloader
You may face an issue where JD randomly closes when dowloads are active. In that case you need to update java as below
sudo apt-get install sun-java6-jre
sudo update-alternatives --config java
and select sun java
For windows it can be downloaded from the site jdownloader.com
