StoryO for Mac

From Jungle Software:

StoryO takes story outlining and idea organization to a whole new level. Designed by writers for writers, StoryO allows you to flesh out details and then put it all in story order when you're ready. Use StoryO's built-in story outline template or create your own outline topics and questions to suit different types of writing projects. Enter events, scenes, notes and ideas onto electronic index cards. Add text, characters and images to index cards to add even more detail then rearrange and attach them to timelines to develop the structure of your story. StoryO is a great tool for aspiring and professional writers, students, bloggers, journalists and technical writers. Use StoryO for screenplays, stage plays, novels, short stories, webisodes, essays, term papers, non-fiction works, and more.