NZBVortex is a small, efficient, and powerful NZB client for OS X, optimized for performance and ease of use--a usenet client which really takes the pain out of usenet downloading the most efficient way.

Features

• Very efficient multi-server, multi-connection downloads
  
• Web and iPad interface included - works great on your tablet
  
• Robust and reliable
  
• Simple and intuitive UI
  
• Simply the best post-processing
  
• Smart pre-checks for junk and passworded NZBs
  
• Cleans up your downloads after they are finished
  
• Optimize download size, smart-skipping Samples and par2 files
  
• Post processing, parring, unnrarring, unzipping, joining
  
• Quick data checks using CRC32, SFV and PAR2
  
• Shutdown/sleep when all downloads are completed
  
• RSS feed watcher - automate your downloads
  
• NZB watch folder - add nzbs from a specific folder
  
• Support for yEnc and UUEncode encoded downloads
  
• Supports SSL servers
  
• Low SSD wear - we optimize disk I/O
  
• Download throttling/limiting
  
• Growl and OS X 10.8 Mountain Lion notifications support
  
• Automatically move downloads to desired folders
  
• Scheduler -- disable or limit downloads at specific times
  
• Open network API for 3rd party developers to control the queue
  
• much more
  

Version 3.3.5:

• Prospectively add par2 files during download preventing a lengthy par2 check
  
• Prevent too many par2 checks during obfuscated downloads
  
• NZB name rename is named back to odd name
  
• Group filter menu broken on filter bar