Toyhouse - Toyhouse is a platform that allows users to build up characters foe their games and stories.
Hullabalu - Interactive stories for kids
Refsheet.net - Refsheet.
Tellast - Write stories collaboratively with others
World Anvil - World Anvil is a worldbuilding tool for Authors, Storytellers and worldbuilding lovers.
Hellosaurus - Interactive mobile shows kids can play, not just watch