JDownloader is a free open-source download management tool.

FreeRapid is an easy to use Java downloader that supports downloading from Rapidshare, Youtube, Facebook, Picasa and other file-sharing services.

CryptLoad is a freeware download manager for Microsoft Windows that downloads files from file-hosting websites such as RapidShare and Megaupload.

pyload is a free and Open Source download manager written in Pure Python and designed to be extremely lightweight, fully customizable.

Tucan Manager is a free file sharing app with the ease of one-click hosters.