Sonarr

Sonarr is an open-source personal video recorder (PVR) application designed for Usenet and BitTorrent users who want to automate the management of TV show downloads. It monitors RSS feeds for new episodes of tracked shows, automatically grabs, sorts, and renames files, and can scan an existing media library to find and download missing episodes. Sonarr also supports automatic quality upgrades, replacing lower-quality files with better versions as they become available.

The software integrates with popular download clients such as SABnzbd and NZBGet, and media servers like Kodi and Plex for notifications, library updates, and metadata syncing. It runs across major platforms including Windows, Linux, macOS, and Raspberry Pi, making it accessible to a wide range of home media server users.

Sonarr is built and maintained by an open-source community with over 320 contributors, distributed under the GPL-3.0 license. It serves hobbyist media collectors, home theater enthusiasts, and self-hosted media server administrators who want automated TV show acquisition and organization without manual intervention.