iThoughtsHD is a mind mapping tool for the iPad. If you have an iPhone or iPod Touch then check out iThoughts. Mindmapping enables you to visually organise your thoughts, ideas and information. We use this for almost every project. The clients are able to see on the map exactly what they have, where we are going to take them, and where they can be down the road. This mindmapping tool is a great start to any freelancing project.
Since this is an app for Ipad or Iphone the link is to the download. I believe it is $10, but worth the price if you plan to freelance full time.