In terms of market share, Open AdExchange is clearly lagging behind, losing to ReferLocal in all segments.
Open AdExchange has better usage coverage in more websites categories. Including Business & Industry, Shopping, Internet & Telecom, Law & Government and 10 other categories.
ReferLocal is leading in News & Media.
Open AdExchange is leading in most countries, including Denmark, Guatemala, Norway, Slovakia and one other country.
ReferLocal is leading in United States and China.