MovieTag is described as 'Tag and search your entire movie collection - With a library of over 250,000 movies and counting movietag was built to handle collections of any size. Built for desktop, tablet and mobile - Access your movie collection anywhere and on any device' and is an app in the Video & Movies category. There are more than 100 alternatives to MovieTag for a variety of platforms, including Online / Web-based, Android, iPhone, iPad and Windows. The best alternative is IMDb, which is free. Other great apps like MovieTag are Trakt.tv (Freemium), The Movie Database (Free), Simkl (Freemium) and Letterboxd (Freemium).
The Internet Movie Database (IMDb) is an online database of information related to movies, actors, television shows, production crew personnel, video games, and most recently, fictional characters featured in visual entertainment media.
It's completely user driven by people like you. TMDb is currently used by millions of people every month and with our and powerful API, also used by many popular media centers like Moovida, XBMC, Plex, MythTV and MediaPortal.
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.
Letterboxd is a social site for sharing your taste in film, now in public beta. Use it as a diary to record your opinion about films as you watch them, or just to keep track of films you’ve seen some time in the past. Rate, review and tag films as you add them.