FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
WonderWebWare Sitemap Generator - Sitemap Generator is freeware program that will help you to automatically generate site maps for google, bing and yahoo in their respective file formats.
GlooMaps - Create your visual sitemap on the go - easy peasy
XML-Sitemaps.com - Free Online Google Sitemap Generator.
Screaming Frog SEO Spider - The Screaming Frog SEO Spider is a small desktop program (PC or Mac) which crawls websites’ links...
SEO Crawler - A web-based crawler with real-time crawl feedback.