File Extension NZB

In order to use a file with the NZB extension, you must plug it into an nzb “client” program, which will then download the files listed in the NZB from your ISP’s Usenet newsgroup server.

Files with the .nzb extension contain a plain-text listing of files and are interchangeable on all computers. Both of these NZB client programs run on Windows and the Mac:

SuperNZB (for power users)
ezNZB (for newbies)