XBT is high-performance low-overhead BitTorrent software., Extended BitTorrent, XBT Client is a BitTorrent client written in C++. It's designed to offer high performance while consuming little resources (CPU and RAM).

XBT Features:
1. Automatic, fast resume.
2. File queueing.
3. File priorities.
4. Global keyboard shortcut (Ctrl+Shift+Q) to show or hide the main window.
5. Integrated torrent maker.
6. Integrated UDP tracker.
7. Multi interface (command-line, graphical and web)
8. Multi platform (Linux and Windows).
9. Single window, multiple torrents.
10. Upload rate limit.
11. UPnP NAT port mapping.
12. Web frontend (PHP).

Installing under Windows
1.Download XBT Client
2.Run the executable.
3.Start the client via the start menu (Start - Programs - XBT Client) or by double-clicking on a torrent.

No great looks, but XBT does what it has to and is very lightweight like uTorrent. So if you don't care about looks, XBT might be something for you. XBT does not support BitTorrent encryption, RSS, and DHT.

The license of this software is Free, you can free download and free use this torrent downloader software.