Radarr is a movie collection manager for Usenet and BitTorrent users. It monitors RSS feeds and works with indexers and download clients to automatically grab, import, sort, and rename movies, with support for quality upgrades over time.

Key Features

Add and manage movies with rich metadata (ratings, trailers, posters)
RSS monitoring and interactive/manual search for releases
Integration with common Usenet and torrent download clients
Automatic importing, organization, renaming, and library management
Quality profiles and automatic upgrades when better releases become available
Failed download handling with automated retries for alternate releases
Notifications and library update integrations for media servers

Use Cases

Automate building and maintaining a personal movie library from Usenet or torrents
Keep an existing library organized while upgrading to better quality formats
Integrate with a broader media stack (indexers, download clients, media servers)

Limitations and Considerations

Only one version of a given movie is supported per instance; multiple qualities (for example 1080p and 4K) typically require multiple instances

Radarr is well-suited for users who want hands-off movie acquisition and consistent library organization. With flexible quality profiles and broad client integration, it fits neatly into automated media workflows while still allowing manual control when needed.