Tixati is a free, simple, and easy to use P2P client that is compatible with the bit-torrent protocol.

Features
100% compatible bit-torrent client
Windows and Linux-GTK native versions available
detailed user interface, with views of individual peers, detailed bitfield graphs, and bandwidth usage charting
highly flexible bandwidth throttling, including trading/seeding share adjustment and adjustable priority for individual transfers and peers
efficient peer choking / unchoking algorithms to ensure fast downloads
support for magnet links
easy to create and seed new transfers
peer, transfer, and system-wide event logging with adjustable detail level and backscroll size
move downloaded files to new filesystem location while transfer is in progress, even to different partition
full DHT (Distributed Hash Table) implementation including detailed message traffic charting

What's New
A full-featured RSS reader with automated torrent loader
Downloaded files can be moved by right-clicking transfers
'Move on complete' can be adjusted by right-clicking transfers
Magnet links can be copied and .torrent files can be saved by right-clicking transfers
Peer connection algorithms have been fine-tuned for better performance
Several minor refinements to the user interface