Plot Factory - Online story planner, organizer, and writing application.
World Anvil - World Anvil is a worldbuilding tool for Authors, Storytellers and worldbuilding lovers.
Scrivener - Scrivener is a content-generation tool for composing and structuring documents.
World Scribe - World Scribe is a platform that eases the creation process if novel and allows users to keep track of important elements in their world.
Notebook.ai - A smart notebook that grows and collaborates with you
Kanka.io - Kanka.