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 50 other categories.
WhosOn is leading in most countries, including United Kingdom, Germany, Ireland, Netherlands and 53 other countries.
Listrak is leading in United States, Canada, Australia, India and 12 other countries.