Six Apart Advertising is leading in Top 10K Sites and Top 100K Sites.
Six Apart Advertising has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Computer & Electronics and 60 other categories.
Visible Measures hasn't got a lead over Six Apart Advertising in any websites category.
Six Apart Advertising is leading in most countries, including United States, United Kingdom, Brazil, Switzerland and 15 other countries.
Visible Measures is leading in Greece.