Marin Software
12,438 websites

Marin Software offers both free and paid options

http://www.marinsoftware.com/

Manage your Paid Search, Display Advertising, Social Media and Mobile Advertising in one easy to use platform.

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Siteimprove
29,831 websites

Siteimprove is free to use

http://siteimprove.com/

Easy and clear website quality assurance. Make sure your web strategy is aligned with business processes with easy responsibility management and reporting.

Market Share by Top Websites

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

2 In terms of market share, Marin Software is clearly lagging behind, losing to Siteimprove in all segments.

Websites Categories

1 Siteimprove has better usage coverage in more websites categories. Including Science & Education, Law & Government, Health, Finance and 19 other categories.

2 Marin Software is leading in Lifestyle.

Geography

1 Siteimprove is leading in most countries, including United States, Denmark, Canada, United Kingdom and 104 other countries.

2 Marin Software is leading in Pakistan, Israel, Czech Republic, Thailand and 23 other countries.