XML-Sitemaps.com - Free Online Google Sitemap Generator.
DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.
Site Visualizer Professional - Crawl website, visualize pages and links, analyze the structure of a website, build SEO reports with SQL
VisualSitemaps - Autogenerate visual sitemaps in seconds.
Octopus.do - Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.
FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.