SABnzbd v0.4.8 was released a week or so ago on their official site. The list of bug fixes includes:

Fixed various par2-repair problems for OSX

Solved long queue display problem for OSX

Fixed news-group and newzbin-category to SABnzbd-category conversion

The only real issue I have experienced with this app is the long queue display problem in OSX. With an NZB queue of over 400 items Safari would become somewhat unresponsive when changing the post processing script and Firefox would become pretty much unuseable. With 0.4.8 those issues seem to have disappeared and once again the universe is correctly aligned.

With Unison and NZBdrop seemingly lacking development there doesn’t appear to be much competition out there for SABnzbd who are making the best app right now. Unison hasn’t released an update to 1.8.1 in over a year and the NZBdrop developers are somewhat unresponsive to emails, don’t approve posts on their blog etc. Check out SABnzbd 0.4.8 if you’re looking for a new NZB app on OSX. I can tell from the apache logs on this web server that alot of you are!