Mipony is a practical application that can be used to manage multiple downloads simultaneously, without the need to have a Premium account.
This utility facilitates the automation in the download of files hosted in free sites such as: Rapidshare, Megaupload and Mediafire, among others. Moreover, Mipony notifies you whether the links are available before you proceed with the download.
Among its most relevant characteristics you can find the possibility to optimize the Internet connection and a web browser to search your favourite contents. Moreover, it integrates with any of the browsers that you usually use (Internet Explorer, Mozilla Firefox, etc).
Mipony has an organized interface with which you can interact without problems to get what you want.