International Children's Digital Library Read world literature for children and young adults in digital format, available full text in multiple languages. An amazing resource for young readers!
Project Gutenberg: Children's Shelf The original e-book reader, Project Gutenberg has been archiving and digitizing books in the public domain for three decades. An amazing, completely free treasure trove of literature in full text.
Children's Books Online: The Rosetta Project A wonderful online library of illustrated, antique children's books, available full text. Many titles are translated into various languages.
StoryNory: Full Text Stories with Audio for Kids; enjoy fairy tales, classics, original stories, mythology, non-fiction and more; nicely read, completely free and downloadable to your device; very few ads
Tumblebooks E-books for e-kids; storybooks, read-alongs, graphic novels, math stories, non-fiction, videos, puzzles, games and more; includes great classroom resources and lesson plans.
Bartleby Great Books Online, for the fluent reader; A growing collection of full text reference works including dictionaries, encyclopedias, gazetteers, and style manuals in addition to works of poetry, folk and fairy tales, essays, and classic fiction.