* The Numbers: The Numbers provides a comprehensive database of movie statistics, including box office revenue, production budgets, and profitability.
* Box Office Mojo: Box Office Mojo tracks box office revenue for movies in the United States and Canada, and provides lists of top-grossing movies by year, genre, and other criteria.
* Rotten Tomatoes: Rotten Tomatoes aggregates reviews from critics and audiences to provide a score for movies, and also provides lists of top-grossing movies by year, genre, and other criteria.
* Metacritic: Metacritic aggregates reviews from critics to provide a score for movies, and also provides lists of top-grossing movies by year, genre, and other criteria.
* Wikipedia: Wikipedia has a list of the highest-grossing movies of all time, as well as lists of top-grossing movies by year, genre, and other criteria.