Sonarr
Automatic TV series download and library management (Usenet/BitTorrent)
14.8k stars 1.9k forks last commit first released GPL-3.0
Actively maintained
Last commit 26 Jul 2026.
Sonarr is a smart PVR and automation service for managing TV series downloads via Usenet and BitTorrent. It monitors indexers and feeds for new episodes, sends downloads to clients, and keeps your library organized and up to date.
Key Features
- Monitors RSS feeds and indexers to automatically detect new episodes
- Searches for missing episodes by scanning existing libraries
- Quality profiles and automatic upgrades when better releases become available
- Failed download handling with automatic retries on alternate releases
- Configurable episode naming and sorting for consistent libraries
- Integrations with download clients (e.g., SABnzbd, NZBGet) and media servers (e.g., Plex, Kodi) via notifications and library updates
- Supports specials and multi-episode releases
- Web-based UI and API for automation and integrations
Use Cases
- Automate TV series downloads and organization for a home media server
- Maintain consistent naming and folder structures across a large TV library
- Continuously upgrade existing episodes to preferred quality profiles
Limitations and Considerations
- Requires external indexers and download clients to fetch content
- Correct filesystem permissions are important to avoid import/rename issues
Sonarr is a mature automation tool commonly used in media server setups to keep TV libraries complete, neatly organized, and aligned with preferred quality settings. It fits well alongside download clients and media server software for end-to-end automation.
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