Azureus 2.3

Azureus is a Java based BitTorrent client that offers multiple torrent downloads, queuing/priority systems (on torrents and files), start/stop seeding options and instant access to numerous pieces of information about your torrents.

Azureus is a BitTorrent client with multiple torrent downloads and instant access to information.

Azureus also features an embedded tracker that is easily set up and ready to use.
New Features:

Core | Client support for the trackerid announce extension
Core | Client support for the min interval announce extension
Core | Added options to disable scrape entirely or just for non-running torrents
Core | RSS Feed parse APIs added to plugin interface
Core | Non-blocking sockets based TCP tracker implementation
Core | Client identification plugin interface
Core | Separate protocol payload and overhead stats
Core | Data deletion can now defer to Recycle Bin and Trash under Windows and Mac OS X, respectively
Core | Distributed Database
Core | Decentralised tracking
Core | Magnet URI for location of decentralised torrents
Core | Ability to update built-in plugins independently of the core
Core | Diagnostic collection for system properties and config settings
Core | added option to move newly completed seeds to the end of the seeding list, rather than the front
Core | Support for I2P plugin
Core | Network selection support (public, i2p, tor)
Core | Inter-client peer exchange
UI | Option to disable small fonts under OSX
UI | Console support for aliases
UI | Torrent export option added to SWT UI
UI | Keyboard shortcut parsing system
UI | System tray menus for setting global upload and download bandwidth limits
UI | Synthesized speech alerts for Mac OS X; Go to Azureus / Preferences to enable it
UI | New file icon for Mac OS X
Plug | Added local host configuration setting for statusmailer
Plug | Reworked CSS for tracker web pages to create old and new styles