If you design, develop, or architect Websites or other GUI-based software applications, then OverSite is the app for you.
With OverSite, you can quickly define your site or application's structure. Creating wireframe mockups of your pages and screens is also a breeze. You can attach notes to your wireframes to provide further details. Once you're done, OverSite will auto-generate a structure map of your site or application, and will allow you to export to a number of different formats.