Try some free MindMap tools:
FreeMind: http://freemind.sourceforge.net/wiki/index.php/Main_Page
XMind: http://www.xmind.net
Et familiewebsite
Try some free MindMap tools:
FreeMind: http://freemind.sourceforge.net/wiki/index.php/Main_Page
XMind: http://www.xmind.net