Sonarr

Sonarr (formerly NzbDrone) is a PVR for Usenet and BitTorrent users. It can monitor multiple RSS feeds for new episodes of your favorite shows and will grab, sorts and renames them.

Free Open Source Mac OS X Windows Linux BSD Mono

CouchPotato

CouchPotato is an automatic NZB and torrent downloader. You can keep a "movies I want"-list and it will search for NZBs/torrents of these movies every X hours. Once a movie is found, it will send it to SABnzbd or download the .

Free Open Source Windows Linux Mac

Sick Beard

Sick Beard is a PVR for newsgroup users (with limited torrent support). It watches for new episodes of your favorite shows and when they are posted it downloads them, sorts and renames them, and optionally generates metadata for them.

Free Open Source Windows Linux

Watcher

Watcher is an automated movie NZB & Torrent searcher and snatcher. You can add a list of wanted movies and Watcher will automatically send the NZB or Torrent to your download client.

Free Open Source Mac OS X Windows Linux BSD Self-Hosted