In terms of market share, Adoperator is clearly lagging behind, losing to Kelkoo in all segments.
Adoperator has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Business & Industry, Music & Audio and 31 other categories.
Kelkoo hasn't got a lead over Adoperator in any websites category.
Adoperator is leading in most countries, including Sweden, United States, Poland, Bulgaria and 9 other countries.
Kelkoo is leading in United Kingdom.