XmlLint is an awesome formatting & beautification site for XML, the most widespread data markup format on the web.
xmllint.com appears in the published seller files of 1 advertising network. Each row below is that network's own declaration that it is authorised to sell this site's inventory, with the date the relationship first appeared in the record.
Same niche, closest authority score — the competitive set a network would compare xmllint.com against.