XML-Sitemaps.com - Free Online Google Sitemap Generator.
DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.
MySitemapGenerator - Online XML generator tool for SEO and eCommerce. Creates Sitemaps, shopping ads feeds, RSS, and podcast feeds.
A1 Sitemap Generator - A1 Sitemap Generator has been in active development and sold since 2005.
PowerMapper - Create visual HTML site maps and XML sitemaps for search engines of any web site quickly and easily.
Web-Site-Map.com - XML Sitemap Generator - Free online XML / Google Sitemap Generator. Easy to use, no need to sign-up. Good for big sites.