IMDb is described as 'Launched online in 1990 and a subsidiary of Amazon.com since 1998, IMDb is the world's most popular and authoritative source for movie, TV and celebrity content, designed to help fans explore the world of movies and shows and decide what to watch' and is a leading Movie Review site in the video & movies category. There are more than 100 alternatives to IMDb for a variety of platforms, including Web-based, iPhone, Android, iPad and Android Tablet apps. The best IMDb alternative is The Movie Database , which is free. Other great apps like IMDb are Simkl, Letterboxd, Trakt.tv and Metacritic.