Overview: Spade is at its core a metrics tool that allows quick visualization of what kinds of CSS properties websites are using. It allows input of a list of websites to scrape, and it crawls to 1 level on each website whilst submitting a variety of user agent strings in order to ascertain different kinds of markup returned as a result. It tries to detect UA sniffing by commparing the returned markup structure of each site.
All the information is recorded into a database after the crawl, and is accessible from a web interface. For more information on installation and use of the tool, please continue through the documentation.