10. Prowlarr

So Prowlarr is an indexer manager and proxy that integrates with various PVR (Personal Video Recorder) applications, allowing users to manage both Torrent Trackers and Usenet Indexers seamlessly. It works with applications like Radarr, Sonarr, and Lidarr to automate the process of finding and downloading media content. In other words it basically tells all the other ARR applications about the indexers that are available to use to find media content. 
 Prowlarr Apps 
 
 Go to Radarr and obtain its API key at Settings > General > API key 
 Then open up Prowlarr at VMIP: 9696 
 Go to Settings > Apps > + Icon 
 Then make sure you fill in the subnet IP you created for the servarrnetwork. For instance if your servarrnetwork is 172.44.0.1/24 then your subnet IP will be 172.44.0.1 
 
 Prowlar Indexers 
 Setting up the nzbgeek indexer in Prowlarr