SkyDownloader is another P2P(Peer to Peer) software like utorrent, Ares . It combines the use of Bit-torrent and P2P software. There are free as well PRO version available. Pro version provides Faster speed, unlimited technical support & Updates, faster searches and access to more files, no ads, more skins & themes.
SkyDownloader PRO version is $49.95 , how ever you can get it for free by tweeting.
To get PRO for Free, Go to Skydownloader and login using the Twitter account and Post the tweet by clicking
Alternatively , you can create a PRO account and get the PRO version for free.