Radarr!

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. It can also be configured to automatically upgrade the quality of files already downloaded when a better quality format becomes available.

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 .nzb or .torrent to a specified directory.

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. It currently supports NZBs.org, NZBMatrix, NZBs'R'Us, Newzbin, Womble's Index, NZB.su, TVTorrents and EZRSS and retrieves show information from theTVDB.com and TVRage.com.