Use this megathread to share useful tools related to the Servarr apps, media management, usenet and torrent management, etc. I'll start it off with some of my favourite ones:
Recyclarr - Sync the TRaSH Guides Release Profiles to your Sonarr and Radarr instances
DockSTARTer - A script that installs Docker and other dependencies for you, it comes with configurations to run various apps.
Hotio - Collection of regularly updated and maintained docker containers for home server applications, if you want to go the Docker path yourself
LinuxServer.io - Another collection of docker containers with a lot of setup guides, helpful if you're new to Docker
nzb360 - Android app to view and interact with SABnzb, NZBget, Torrents, Sonarr, Radarr, and more
NZBHydra2 - Very powerful meta search for newznab (Usenet) indexers and torznab (torrent) trackers. Must have if you have an account with multiple usenet indexers and find yourself manually searching each site more than you would like
TheLounge - Self-hosted IRC client