Google Adsense
3,553,544 websites

Google Adsense is free to use

http://www.google.com/adsense

AdSense is an ad serving application run by Google. Website owners can enroll in the program to enable text, image, and, more recently, video advertisements on their websites. These advertisements are administered by Google and generate rev...

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PubMatic
2,250,358 websites

PubMatic is free to use

http://www.pubmatic.com

Since 2006, PubMatic (www.PubMatic.com) has been at the forefront of developing innovative technology to help publishers automate the process of evaluating and selling their advertising inventory. PubMatic gives premium publishers a real-ti...

Market Share by Top Websites

1 Google Adsense is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, PubMatic is clearly lagging behind, losing to Google Adsense in all segments.

Websites Categories

1 Google Adsense has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Games, News & Media and 19 other categories.

2 PubMatic is leading in Science & Education.

Geography

1 Google Adsense is leading in most countries, including United States, Japan, South Korea, Russia and 161 other countries.

2 PubMatic is leading in China.