Sonarr
An open-source tool in the self-hosting ecosystem for automated management and downloading of television series. It is one of the applications in the *arr ecosystem suite.
Timeline (last 90 days)
Sonarr relies on indexers to search for episodes; an indexer is essentially a set of configurations that tell Sonarr where to find resources and how to parse the returned results.
The general approach to dealing with automated trust risk is to introduce the zero-trust principle: leave a manual or rule-based check at each of the three stages of indexing, filtering, and downloading, rather than letting everything through end to end.
Sonarr provides an independent size validation layer; by setting minimum/maximum file sizes for individual episodes or full seasons, fake torrents with clearly abnormal sizes can be excluded.
Sonarr allows users to customize the weight of each scoring dimension and set a minimum score threshold; resources below the threshold are discarded directly.
Sonarr's scoring system scores search results based on dimensions such as resolution, source (e.g., WEB-DL, BluRay), encoding format (H.264, H.265), release group, and whether multilingual audio tracks are included.
Sonarr supports a delay grab feature, which lets Sonarr mark but not immediately push to the downloader, leaving time for manual confirmation.
Sonarr allows specifying a list of preferred or required release groups in the settings, and can also set a blacklist to exclude known junk release groups.
Sonarr's behavior pattern is predictable: it searches indexers and downloads according to quality preferences, resolution standards, and release time windows, which others can reverse-engineer to track the target episodes.
Sonarr periodically pulls search results provided by public torrent sites via RSS or API, and compares them against the local episode library.
Common Sonarr indexer types include Torznab, Newznab, and custom implementations for specific sites.
11 more timeline events
All Facts (20)
The arr stack is an automated media management system built around the *arr series of open-source applications, typically including Sonarr, Radarr, Prowlarr, a download client, and a media server.
60%UnverifiedThe general approach to dealing with automated trust risk is to introduce the zero-trust principle: leave a manual or rule-based check at each of the three stages of indexing, filtering, and downloading, rather than letting everything through end to end.
50%UnverifiedSonarr provides an independent size validation layer; by setting minimum/maximum file sizes for individual episodes or full seasons, fake torrents with clearly abnormal sizes can be excluded.
50%UnverifiedSonarr allows users to customize the weight of each scoring dimension and set a minimum score threshold; resources below the threshold are discarded directly.
50%UnverifiedSonarr's scoring system scores search results based on dimensions such as resolution, source (e.g., WEB-DL, BluRay), encoding format (H.264, H.265), release group, and whether multilingual audio tracks are included.
50%UnverifiedSonarr supports a delay grab feature, which lets Sonarr mark but not immediately push to the downloader, leaving time for manual confirmation.
50%UnverifiedSonarr allows specifying a list of preferred or required release groups in the settings, and can also set a blacklist to exclude known junk release groups.
50%UnverifiedSonarr's behavior pattern is predictable: it searches indexers and downloads according to quality preferences, resolution standards, and release time windows, which others can reverse-engineer to track the target episodes.
50%UnverifiedSonarr periodically pulls search results provided by public torrent sites via RSS or API, and compares them against the local episode library.
50%UnverifiedSonarr relies on indexers to search for episodes; an indexer is essentially a set of configurations that tell Sonarr where to find resources and how to parse the returned results.
50%UnverifiedCommon Sonarr indexer types include Torznab, Newznab, and custom implementations for specific sites.
50%UnverifiedSonarr handles tracking and automatic downloading of TV series, Radarr handles movies, Prowlarr serves as an aggregator to centrally manage indexer sites, Bazarr automatically matches and downloads subtitles, and SABnzbd is a download client based on the Usenet protocol.
50%UnverifiedSonarr handles TV series management and Radarr handles movie management, and they are the de facto standard for automated media library management.
50%UnverifiedLibrrary's roadmap includes an import feature from Sonarr and Radarr, as well as optional manual upgrade approval.
50%Unverifiedv25 fixes an issue where Sonarr 2 displayed incorrect air dates for upcoming items in certain time zones.
50%Unverifiednzb360 is a media server management application for the Android platform, used to manage self-hosted services such as Sonarr, Radarr, and download clients.
50%UnverifiedThe *arr suite of tools (such as Sonarr and Radarr), combined with download clients, can automate media acquisition and metadata scraping.
50%UnverifiedLidarr is an automated media management tool designed specifically for music, derived from the Sonarr and Radarr projects, and relies on MusicBrainz for metadata matching.
50%UnverifiedWithin the Arr family toolchain, Sonarr manages TV series, Radarr manages movies, Prowlarr manages indexers, Bazarr downloads subtitles, Lidarr manages music, and Readarr manages e-books.
50%UnverifiedA complete media automation stack typically includes Plex or Jellyfin, Sonarr/Radarr, Prowlarr, and qBittorrent or Transmission.
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