BitSpirit

BitSpirit is a very powerful and easy-to-use BitTorrent client that provides not only full BitTorrent protocol implementation but also many personalization features.

BitSpirit supports simultaneous downloads, download queue, UPNP port-maping, NAT traversal(UDP transport), select downloads from multiple files torrent package, disk cache, chatting with other peers, torrent market, ip-filter, etc. In 3.0 or above versions of BitSpirit, it also supports DHT network - which is based on Kademlia protocol - and fully compatible with Bittorrent official client.

Here are some key features of "BitSpirit":

Clean UI, Multiple simultaneous downloads Torrent Share Preview while downloading Trackerless support (Mainline DHT, v3.0.0+) Multi-tracker support Disk cache Fast job resume File selecting support UPnP, NAT Traversal support Protocol Encryption Easy-to-use download management Shutdown computer when job done HTTP/SOCKS4/5 proxy support High speed & Low CPU usage Unicode support (v3.5.0+) IPv6 support (v3.6.0+) Scheduled Tasks (v3.6.0+) Private Tracker support (v3.6.0+) magnet links support (v3.6.0+)