RapGet is a downloader tool for downloading files from files hosting services like Rapidshare, Megaupload and others. RapGet supports around 68 free file sharing sites.
RapGet allows simultaneous downloads and has multilingual support. If you have premium account with Rapidshare or other sites you can enter the login details to download files simultaneously or else you have to wait in between downloads for the specified time. It takes care of the captchas.
It has support for proxy, if you are behind a proxy you can specify the details in settings. You can also schedule your downloads using scheduler.
It is a standalone application, download the zip archive and extract it to a folder and use it. Source: DownloadSquad