FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
XML-Sitemaps.com - Free Online Google Sitemap Generator.
MySitemapGenerator - Online XML generator tool for SEO and eCommerce. Creates Sitemaps, shopping ads feeds, RSS, and podcast feeds.
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.
A1 Sitemap Generator - A1 Sitemap Generator has been in active development and sold since 2005.
DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.