Sabnzbd
SABnzbd is a multi-platform binary newsgroup downloader. The program works in the background and simplifies the downloading verifying and extracting of files from Usenet. SABnzbd uses NZB files (similar to .torrent files, but for Usenet), instead of browsing Usenet directly.
Not a 404, but almost
The docs for this application are not properly written yet. If you need them, please let us know in the Discord and we'll take the time to make them for you.