These are a few
Classic Stories (Public Domain)
Project Gutenberg Gems
Archive.org Gems
Modern Fairy Tales for Kids (new stories)
Favorite Fairy Tale Retellings for Kids
Some of the Best Middle-Grade Retellings
Best Adult Short Story Collections
Anything edited by Ellen Datlow
Some of the Best Young Adult Retellings
Modern fairy tales for Young Adults (and Adults)
DeLint, Charles. Seven Wild Sisters.
