µTorrent is a small and incredibly popular BitTorrent client.
Micro-Sized Yet Feature Filled
Most of the features present in other BitTorrent clients are present
in µTorrent, including bandwidth prioritization, scheduling, RSS
auto-downloading and Mainline DHT (compatible with BitComet).
Additionally, µTorrent supports the Protocol Encryption joint
specification (compatible with Azureus 2.4.0.0 and above, BitComet 0.63
and above) and peer exchange.
Resource-Friendly
µTorrent was written with efficiency in mind. Unlike many torrent
clients, it does not hog valuable system resources - typically using
less than 6MB of memory, allowing you to use the computer as if it
weren't there at all. Additionally, the program itself is contained
within a single executable less than 1 MB in size.
Skinnable and Localized
Various icon, toolbar graphic and status icon replacements are
available, and creating your own is very simple. µTorrent also has
support for localization, and with a language file present, will
automatically switch to your system language. If your language isn't
available, you can easily add your own, or edit other existing
translations to improve them!
Actively Developed and Improved
The developer puts in a lot of time working on features and making
things more user-friendly. Releases only come out when they're ready,
with no schedule pressures, so the few bugs that appear are quickly
addressed and fixed.