Mac users interested in Vuze for os x leopard generally download:
uTorrent is the world's most popular BitTorrent client, and is now available for Mac.
uTorrent Mac introduces uTP, a new lightweight BitTorrent protocol that makes incredibly efficient use of network bandwidth while reducing network problems.
uTorrent also supports the Protocol Encryption joint specification (compatible with Azureus 2.4.0.0 and above, BitComet 0.63 and above) and peer exchange.
uTorrent was written with efficiency in mind.
Vuze is the ultimate client for BitTorrent. Mac-native, it's a fast and accessible file sharing solution. It lets you find torrents with a built in search bar, then download them at blazing speeds. Vuze even lets you control your torrent downloads from a web interface. File transfer, with helpful features Built-in player. Watch videos in stunning HD. Bandwidth management. Adjust bit-rates to boost download speeds. RSS integration. Subscribe to feeds, and let the content come to you.