Deluge is a lightweight, free, cross-platform BitTorrent client. It uses libtorrent in it´s backend and PyGTK for it´s user interface.

Deluge features a rich plugin collection; in fact, most of Deluge´s functionality is available in the form of plugins. Deluge was created with the intention of being lightweight and unobtrusive.

Features:

• Web UI
• BitTorrent Protocol Encryption
• Mainline DHT
• Local Peer Discovery (aka LSD)
• FAST protocol extension
• µTorrent Peer Exchange
• UPnP and NAT-PMP
• Proxy support
• Web seed
• Private Torrents
• Global and per-torrent speed limits
• Configurable bandwidth scheduler
• Password protection
• RSS
• And much more!

Linux and Mac OS X versions of Deluge are available at the developer´s website.

What's New in version 1.2.0 RC3:

GtkUI:

• Replace & with & in the details tab to ensure there are no markup errors
• Consider 0 unlimited when displaying limits in the statusbar
• Fix adding torrents when not showing the add torrent dialog in Windows
• Fix crash when removing multiple torrents

Core:

• Fix #1047 move completed does not work if saving to non default path
• Fix renamed files not being utf-8 encoded
• Fix torrent name being blank when renaming root folder to /
• Do not include an 'announce-list' key in torrents when there is only one tracker

Web:

• Fix #1046 changing auto managed via the details tab
• Fix setting torrent options when adding
• Fix setting file priorities when adding
• HTML escape the field values on the details tab
• Fix #215, make infinite eta values display in the correct order
• Fix displaying the protocol upload speed
• Fix #990, showing 0 as a limit when it means unlimited in the statusbar

Console:

• Fix displaying non-ascii strings
• Fix #1052 crash when issuing commands while not connected to a daemon
• Fix crash when string length makes line longer than terminal width
• Improve 'info' command draw speed