TiddlyMap - An interactive concept- and mind-mapping plugin for the personal note-taking software TiddlyWiki based on the Vis.js library. It's free and open-source!

Plot Factory - Online story planner, organizer, and writing application.

Wisdomap - Wisdomap Medicine is a study aid that helps medical students create differential diagnoses and suitable management plans from a presenting complaint and structured revision notes.

Scrivener - Scrivener is a content-generation tool for composing and structuring documents.

IOctopus - IOctopus is an online mind map service for a dive deep into the mind for the best ideas.

World Anvil - World Anvil is a worldbuilding tool for Authors, Storytellers and worldbuilding lovers.