SABnzbd - SABnzbd is a free/open-source cross-platform binary newsreader written in Python.

Universal Media Server - Universal Media Server allows you to host your entire library of video, music, and pictures, and broadcast them conveniently to a wide variety of different devices.

NZBGet - The most efficient usenet downloader.

Kodi - Kodi is an award winning free and open source media player that got its start on the Xbox console.

GrabIt - GrabIt is a free application that enables you to easily find and download content from Usenet news...

Veso - Veso is an open source media server. An emby/jellyfin fork that will move to a js react framework and focus on remote/rclone mounted media rather than local storage.