FreeMind mind-mapping software for PC or MAC

FreeMind encompasses a fine range of features, including;

• Icons and color formatting options to help you visually organize concepts.
• It also supports hyperlinks, which allow you to link Web sites and even documents to a map.
• Export your landscape of thoughts in a variety of formats, including HTML, PDF, and JPEG.

It's evident how mind maps like FreeMind can hasten note-taking, or help you visualize a project, paper, or process.

More information here