Scrivener, Fanfiction.net, yWriter, Hemingway Editor, articy:draft, Story Planner for Writers, Manuskript, Archive of Our Own, bibisco, Storyist, Gingko, Fortelling - Writer Tools, Story Plotter, novelWriter, FreeWriter, Notion Story Wiki, The Novel Factory, Shaxpir, Hiveword, Mariner Persona, Masterwriter, My Storybook, Plume Creator, FictionPress, Pagefour, SuperNotecard, SquidgeWorld Archive, StoryMill, Outline 4D, Liquid Story Binder XE, Causality by Hollywood Camera Work, Yarny, Unlimited Fan Fiction, Plotline, Quoll Writer, Matcha are some alternatives to OStorybook.