Xmind - Xmind is a brainstorming and mind mapping application.
XML-Sitemaps.com - Free Online Google Sitemap Generator.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.
PowerMapper - Create visual HTML site maps and XML sitemaps for search engines of any web site quickly and easily.