Tools: Mindmapping

Inspiration (paid options)
Capture ideas, structure thoughts and visually communicate concepts to strengthen understanding with the Diagram and Map Views. To take notes, organize information and structure writing plans for papers and reports, use the integrated Outline View to clarify thinking in written form. Finally, you can effortlessly transfer your diagrams and outlines to Word, PowerPoint, PDF or as a graphics file. For Windows desktop and iOS mobile.

MindMup (free and paid options)
Brainstorm, create presentations and document outlines with mind maps, and publish your ideas online and to social networks. Available only as an online web app.

MindNode (free and paid options)
Capture your thoughts and create a clear picture of your idea. For Mac and iOS.