With Mindjet, you can create mind maps, capture notes or brainstorm ideas on your iPhone or iPad. This awesome mind-mapping app is now free.
ConceptDraw MindMap is a popular mind mapping software for Mac much like Mindjet Mindmanager. Learn how to get this software for free.
MindMeister, a web based tool for creating mind maps online, provides some very unique options for capturing and inserting ideas into an existing mind map without having to load the map.