Plottr - The #1 rated visual book planning and series bible software for professional and aspiring writers.
INKredible - INKredible is an app with a single mission: to make your handwriting experience on tablets as good...
Plot Factory - Online story planner, organizer, and writing application.
GoodNotes - GoodNotes lets you take notes and annotate PDF documents.
Story Planner for Writers - A beautiful and easy-to-use app to outline your novels and screenplays.
Epsilon Notes - Common Mark editor for Android and Windows