BitSpirit è un buon client per BitTorrent ricco di funzioni:

Clean interface
Multiple simultaneous downloads
Disk cache mechanism
Fast job resume
File selecting support
Powerful file manager
UPnP portmapping
Instant Messaging support
Gzip Data compression
Flexible speed control
Scheduled downloading
Integrated with IE
Shutdown computer when done
HTTP/SOCKS4/5 proxy support
High speed
Very low CPU & Mem usage