Software update: SABnzbd 0.5.3 RC1

Last Sunday the first release candidate of SABnzbd version 0.5.3 was released. With SABnzbd binary and text files can be downloaded from usenet. The software is released as an open source application and is available for Windows, Linux and Mac OS X. The program offers the possibility to load nzb files, after which the correct files are picked from usenet. By means of the built-in web interface it is possible to control the program via a web browser. Below you will find everything that has changed since version 0.5.2.


  • Support of nzbmatrix categories (dotted style: apps.linux)
  • Support of X-DNZB headers for all indexing sites (allows categories for
  • Support 101 season/episode notation.
    WARNING: make sure you restrict SeasonSorting to specific categories.
    Much more titles will be interpreted as episode/season (“bla 101 name”, “”, “bla-101-name”.
  • Use all text after the season/episode element as episode name (don’t require ‘-‘)
  • Support of categories in RSS feeds
    (only for compatible feeds, like and more info.

Bug fixes:

  • Accumulate all groups in an NZB (for category matching)
  • After reducing connections SABnzbd should retry full amount 10 min later
    This event was sometimes missed
  • Recursive unpack of archives should be done in nested folders instead of base folder
  • Sort strings with an absolute path were not handled properly
  • Restore compatibility with Python 2.4
  • Several fixes to improve robustness of NZB retrieval from indexers
  • Solved crash in NZB retrieval from indexers when explicit PP value was set


  • Remove most newzbin features from UI

Version number 0.5.3 RC1
Release status beta
Operating systems Windows 7, Windows 2000, Linux, Windows XP, macOS, Windows Server 2003, Windows Vista, Windows Server 2008
Website Manufacturer
File Sizes 6.38MB – 10.40MB
License type GPL