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 83 other categories.
Listrak is leading in Shopping, Clothing, Home & Garden, Health and 58 other categories.
WhosOn is leading in most countries, including United Kingdom, India, Germany, Ireland and 57 other countries.
Listrak is leading in United States, Canada, Australia, New Zealand and 13 other countries.