Trakt.tv - Automatically track TV shows & movies you're watching.
WMM - Search Your Favorite Movie And TVShow With Biggest Database
Simkl - Simkl is a TV, anime, and movie tracker that keeps a history of all the shows and movies you watch in one, central location. It’s a mobile app, a website, Google Chrome extension to keep track of everything you watch and integrates with many TV apps
theGoodflix - Find the next great movie or show to watch based on your friend's recommendations.
Showly OSS - Showly is modern, slick, open source Android TV Shows Tracker. This fork gets rid of all proprietary tracking libraries.
Plugged In - Plugged In provides you with detailed information about movies, tv, music, games, books, and youtube channels.