µTorrent (utorrent) is the world’s most popular BitTorrent client. Most of the features present in other BitTorrent clients are present in µTorrent:

bandwidth prioritization,
scheduling,
RSS auto-downloading
Mainline DHT (compatible with BitComet).

µTorrent supports the Protocol Encryption joint specification (compatible with Azureus 2.4.0.0 and above, BitComet 0.63 and above) & peer exchange.

Unlike many torrent clients, it does not hog valuable [...]