Alooma is leading in Top 10K Sites and Top 100K Sites.
Usablenet has better usage coverage in more websites categories. Including Shopping, Business & Industry, Clothing, Autos & Vehicles and 25 other categories.
Alooma is leading in Education, Career & Education, Telecommunications, Online Marketing and one other category.
Usablenet is leading in most countries, including United States, United Kingdom, Spain, Italy and 7 other countries.
Alooma is leading in Germany and Poland.