Wattpad - Wattpad is now the worlds most popular ebook community where readers and writers discover, share...
Storyboard That - Storyboard That is the world's best online storyboard creator.
Medium - Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.
Storybird - Visual storytelling community
Fanfiction.net - The most popular fan fiction website in the world according to Wikipedia
Storyboarder - Storyboarder makes it easy to visualize a story as fast you can draw stick figures.