Provides detailed information about the data being collected trough Query String and Cookies by web analytics solutions (called "tags", "trackers" or "web bug"), ad networks, behavioral targeting and multivariate testing tools. Covers over 200 tools, including Google Analytics, Omniture SiteCatalyst, Coremetrics, WebTrends, ad+Network tags, VOC tags, and several others. The free version is best for part-time analyst and occasional testing. The Pro version allow you to do site audits of your web analytics implementation, or use a list of URLs to validate. Output to CSV, XML and Sitemap formats or use the built-in data browser.