Xmind | mind-mapping software

"XMind is a brainstorming and mind mapping software tool developed by XMind Ltd. of Hong Kong. The program is intended to assist users in capturing ideas, organizing various charts, and share them with collaboration. It supports mind maps, Ishikawa diagrams (also called fishbone diagrams or cause-and-effect diagrams), tree diagrams, organization charts, and spreadsheets. It can be used for knowledge management, meeting minutes, task management, and GTD." [1]

Besides the Mind Map structure, XMind also offers Org-chart, Tree-chart, Logic-chart, and etc. These charts will play an important role in some circumstances. For example, Org-chart can show the company/department/team structure clearly. Logic-chart is very useful in sorting the reasons. More important, all these charts can be used within one map! Every branch can have the most proper structure, even every topic. [2]