What are some alternatives?
When comparing Nzbvortex and SABnzbd, you can also consider the following products
NZBGet - The most efficient usenet downloader.
GrabIt - GrabIt is a free application that enables you to easily find and download content from Usenet news...
HelloNzb - HelloNzb - The Binary Usenet Tool
NewsBin - NewsBin Pro is a Usenet NNTP newsreader that downloads and decodes binary file attachments to...
GetNZB - GetNZB is a free Newsreader software with integrated NNTP access for downloading files from Usenet.
alt.binz - alt.binz is a powerful binary newsreader, for downloading and managing articles from Usenet.