"BitSpirit is a powerful and easy-to-use BitTorrent client which provides not only full BitTorrent protocol implementation but also many personalized features.It 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 networkЈ¬which is based on Kademlia protocolЈ¬and fully compatible with Bittorrent official client.
Multiple simultaneous downloads
Preview while downloading
Disk cache mechanism
Fast job resume
File selecting support
Instant Messaging support
Easy-to-use and powerful download management
Shutdown computer when job done
HTTP/SOCKS4/5 proxy support
High speed & Low CPU usage."