Freeplane - Freeplane is a powerful and free software for building mind maps.
Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
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.
Invision - Prototyping and collaboration for design teams
vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.
Figma Map Maker - Figma plugin to generate map, supporting Google Maps, Mapbox