µTorrent is one of the most popular BitTorrent clients, with plenty of features such as bandwidth prioritization, RSS auto-downloading, scheduling and Mainline DHT (which is compatible with BitComet, another well-known BitTorrent client), Protocol Encryption joint specification (used also by Azureus 4.7.0.0 and above, BitComet 1.30+) and peer exchange. µTorrent was written with efficiency in mind. Unlike many torrent clients, it does not hog valuable system resources - typically using less than 6 MB 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 750 KB in size.