There are a few mind map software packages that have integrated with Evernote. http://lifehacker.com/mohiomap-creates-a-mind-map-to-browse-your-evernote-1508827115 https://appcenter.evernote.com/app/conceptdraw-mindmap/mac http://www.xmind.net/ http://noduslabs.com/cases/evernote-iphone-notes-text-network-graph/