AdBrite
700 websites

AdBrite is free to use

http://adbrite.com

AdBrite labels itself as the internet's ad marketplace. It provides interstitials and banner ads on a cost per mille (thousand) basis, and text ads on either cost per click or cost per action.

VS

AdReactor
475 websites

AdReactor is free to use

http://www.adreactor.com/

AdReactor: Serving over 5 billion impressions world-wide, reaching more than 100 million unique users each month. HIGHLIGHTS. Premium Service for all ...

Market Share by Top Websites

1 AdReactor is leading in Top 100K Sites and Top 1M Sites.

2 In terms of market share, AdBrite is clearly lagging behind, losing to AdReactor in all segments.

Websites Categories

1 AdBrite has better usage coverage in more websites categories. Including Computers Electronics & Technology, Adult, Science & Education, Games and 19 other categories.

2 AdReactor is leading in Arts & Entertainment.

Geography

1 AdBrite is leading in most countries, including United States, India, United Kingdom, Philippines and 47 other countries.

2 AdReactor is leading in Indonesia, France, Russia, Mexico and 20 other countries.