Plot Factory - Online story planner, organizer, and writing application.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
World Anvil - World Anvil is a worldbuilding tool for Authors, Storytellers and worldbuilding lovers.
Sketch - Professional digital design for Mac.
Scrivener - Scrivener is a content-generation tool for composing and structuring documents.
Invision - Prototyping and collaboration for design teams