In order to download torrent files, you will need have a BitTorrent client. These are the more popular BitTorrents clients with no particular order. I personally have been using BitComet & Azureus and have yet to use the others. After so long, I am now sticking with BitComet till I can find a better BitTorrent client.
Azureus (Java BitTorrent Client)
Download Windows Release version 220.127.116.11
Download latest Windows ABC BitTorrent Client version 3.1
Download Windows, Latest Release (5.0.2)
Download Mac OS X, Latest Release (4.4.1)
BitComet installer version 0.79
ÂµTorrent 1.6 Installation Program