Freeplane - Freeplane is a powerful and free software for building mind maps.
App Store Inspiration - Best iOS App icons, screenshots, landing pages & heatmaps
vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.
App Icon Template - Royalty free app icon creator for iOS, OS X and Android
SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.
Bjango App Icon Templates - App icon templates for PS, Ai, Sketch and Affinity Designer