The SABnzbd application was designed to be an open-source cross-platform binary newsreader written in Python.It simplifies the process of downloading from Usenet dramatically, thanks to its friendly web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract and clean up posts downloaded from Usenet.
SABnzbd also has a fully customizable user interface, and offers a complete API for third-party applications to hook into.

· Multi-threaded newsgroup downloader.
· Automatic repair and extract of downloaded files.
· Low RAM usage.
· Fully featured WebUI allowing remote login.
· NZB file support
· Support for the Newzbin API
· Post download scripting
· Post download E-Mail notifications
· Automatic RSS download support
· Support for multiple usenet servers
· Folder monitoring

What's New in This Release:
· Fix broken server test in Wizard and Config->Servers
· Fix uneven download speed of very large NZBs
· Increase timeout for fetching NZB files from websites to 60 seconds
· On Connections Page: show original error message sent by server
· Fix problem when the script folder path contains a space
· Fix disabling of RSS feeds when changing settings
· Include special par2 variant for OSX 10.6+ (automatically selected)
· Warn user (once) about presence of old queue file
· Warn Posix user when a non-supported version of unrar is installed
· Prevent NZB from dropping to bottom of queue when the category is changed
· When forcing disconnect don’t try to send “Quit” to a non-responding server
· Duplicate title checking in RSS is now case-insensitive
· Only warn about presence of old queue when no new queue is present yet
· Avoid potential crash when server closes connection
· Add tbbmalloc.dll to par2 program (prevents problems when you have another version of that file on your system)