Listrak is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
WhosOn has better usage coverage in more websites categories. Including Business & Industry, Computer & Electronics, Internet & Telecom, Travel and 87 other categories.
Listrak is leading in Shopping, Clothing, Health, Home & Garden and 60 other categories.
WhosOn is leading in most countries, including United Kingdom, India, Germany, Spain and 54 other countries.
Listrak is leading in United States, Canada, Australia, Italy and 11 other countries.