Radarr is an independent fork of Sonarr reworked for automatically downloading movies via Usenet and BitTorrent. The project was inspired by other Usenet/BitTorrent movie downloaders such as CouchPotato.

Sonarr is a PVR for Usenet and BitTorrent users. It can monitor multiple RSS feeds for new episodes of your favorite shows and will grab, sort and rename them. It can also be configured to automatically upgrade the quality of files already downloaded when a better quality format becomes available.

Lidarr is a music collection manager for Usenet and BitTorrent users. It can monitor multiple RSS feeds for new tracks from your favorite artists and will grab, sort and rename them.

Whisparr is an adult movie collection manager for Usenet and BitTorrent users. It can monitor multiple RSS feeds for new movies and will interface with clients and indexers to grab, sort and rename them.

Tdarr is a self hosted web-app for automating media library transcode/remux management and making sure your files are exactly how you need them to be in terms of codecs/streams/containers etc. Designed to work alongside Sonarr/Radarr and built with the aim of modularisation, parallelisation and scalability, each library you add has its own transcode settings, filters and schedule. Workers can be fired up and closed down as necessary, and are split into 3 types - 'general', 'transcode' and 'health check'. Worker limits can be managed by the scheduler as well as manually. For a desktop application with similar functionality please see HBBatchBeast.

Prowlarr is a indexer manager/proxy built on the popular arr .net/reactjs base stack to integrate with your various PVR apps. Prowlarr supports both Torrent Trackers and Usenet Indexers. It integrates seamlessly with Sonarr, Radarr, Lidarr, and Readarr offering complete management of your indexers with no per app Indexer setup required (we do it all).

Bazarr is a companion application to Sonarr and Radarr. It manage and download subtitles based on your requirements. You defined your preferences by TV show or movies and Bazarr take care of everything for you.