Mipony

lets you create download queues for websites like Rapidshare, Mega, Hotfiles, Gigasize, Filefactory, and many more. You just have to add the links you want to download and the program will do the rest, respecting the conditions for each free service (like waiting time and speed limit). In addition, Mipony includes a simple, built-in web browser to search for links directly from the application itself.