Some of the most popular children's classics, such as "Aesop's Fables" and "Adventures of Huckleberry Finn," are available for free online reading on the Library of Congress' website. Other favorite classics available on the free website include "Cinderella," "Alice's Adventures in Wonderland," "The Jungle Book" and "Jack and the Beanstalk."
More modern children's picture books are accessible via free websites such as We Give Books as of 2015. The site includes popular titles such as "The Snowy Day" by Jack Ezra Keats and "Goodnight Goon: A Petrifying Parody" by Michael Rex.
Free children's books are offered daily at Amazon.com. Books listed on the website vary and may be sorted by average review, relevance, publication date, number of reviews and popularity. "Little Bad Wolf and Red Riding Hood" by Timothy Tocher and Bruce Lansky is one of the most highly-rated free books on the website.
Individuals with an Amazon.com Prime membership may access many books for free online. One of the most popular books to access with a membership is "Harry Potter and the Sorcerer's Stone" by J.K. Rowling. Many public libraries offer popular eBooks that may be accessed online with a valid library card. Some children's categories include nonfiction, fiction and young adult fiction.