Fathom SEO
5 websites

Fathom SEO offers both free and paid options

http://www.fathomseo.com/

Search engine optimization firm offering pay-per-click, link building and web analytics. Cleveland, Ohio.

VS

Optimax Media Delivery
26 websites

Optimax Media Delivery is free to use

http://optmd.com/

OPTIMAX Media Delivery ... We are also one of the few ad servers that labels the ads we deliver in a way that makes it easy for consumers to find and contact us.

Market Share by Top Websites

2 In terms of market share, Fathom SEO is clearly lagging behind, losing to Optimax Media Delivery in all segments.

Websites Categories

1 Optimax Media Delivery has better usage coverage in more websites categories. Including Computers Electronics & Technology, Science & Education, Community & Society, Adult and 4 other categories.

2 Fathom SEO is leading in Business & Consumer Services and Lifestyle.

Geography

1 Optimax Media Delivery is leading in most countries, including United States, India, Brazil, Canada and 6 other countries.

2 Fathom SEO is leading in South Korea and Egypt.