Sitemap Thing is an application for creating a Google Sitemap file. A Google Sitemap is a protocol. The Google Sitemap Protocol allows you to inform search engines about URLs on your websites that are available for crawling. A Google Sitemap is an XML file that lists URLs for a site. The Sitemap Thing connects to your website, lists the files and folders on your website, automatically creates a properly formatted XML Google Sitemap file, and uploads the file to your website.