Porter mainly wrote children's literature, adventure stories and romance fiction. Her most famous novel is Pollyanna (1913), later followed by a sequel, Pollyanna Grows Up (1915). Her adult novels include The Turn of the Tide (1908), The Road to Understanding (1917), Oh Money! Money! (1918), Dawn (1919), Keith's Dark Tower (1919), Mary Marie (1920), and Sister Sue (1921); her short story collections include Across the Years (c. 1923), Money, Love and Kate (1923), Little Pardner (1926).
Porter achieved considerable commercial success: during 1913, Pollyanna ranked eighth among bestselling novels in the United States, second during 1914, and fourth during 1915 (it had forty-seven printings between 1915 and 1920); during 1916, Just David ranked third; during 1917, The Road to Understanding ranked fourth; during 1918, Oh Money! Money! ranked fifth.
^"Funeral Tuesday Of Eleanor H. Porter". Boston Globe. May 23, 1920. Retrieved 2011-05-11. "The funeral of Mrs. Eleanor H. Porter, famous as the author of stories of happy children, of which the "Pollyanna" stories are the best known, will be held Tuesday afternoon at 2.30 from her home, 33 Washington ave, Cambridge."