TeeVee - Your TV show guru - track what you watch
TV That Rocks - Track, discover & build collections of your fav TV Shows
Trakt.tv - Automatically track TV shows & movies you're watching.
Geobird - Discover and share with the world in a new way
SERIST - Your personal TV show tracker
Showly - Showly is a free and open-source TV shows tracking application that is created with the help of TV show lovers.