In terms of market share, KeywordMax is clearly lagging behind, losing to WordStream in all segments.
KeywordMax has better usage coverage in more websites categories. Including Business & Industry, Shopping, Health, Travel and 44 other categories.
WordStream is leading in People & Society, Relationships & Dating, Autos & Vehicles, Games and 32 other categories.
KeywordMax is leading in most countries, including United States, United Kingdom, Canada, Cyprus and 14 other countries.
WordStream is leading in Switzerland, Mexico, Ukraine, Malaysia and 9 other countries.