Interpolls
2 websites

Interpolls offers both free and paid options

http://www.interpolls.com/

Founded in 1999, Interpolls is a pioneer and leader in rich media and next generation advertising technologies.

VS

WebTrends Ads
2 websites

WebTrends Ads is free to use

http://webtrends.com/solutions/campaign-optimization

Webtrends Optimize gives marketers the tools that they need to customize user ... optimize your global ad spend across paid search and Facebook ads without ...

Market Share by Top Websites

2 In terms of market share, Interpolls is clearly lagging behind, losing to WebTrends Ads in all segments.

Websites Categories

1 Interpolls has better usage coverage in more websites categories. Including Community & Society and Home & Garden.

2 WebTrends Ads is leading in Computers Electronics & Technology.

Geography

1 Interpolls is leading in most countries, including Philippines.

2 WebTrends Ads hasn't got a lead over Interpolls in any country.