Rich
1 websites

Rich offers both free and paid options

http://www.richmetrics.com

A campaign analytics tool for digital media focused on creative agencies, that gives them all the metrics they need - and nothing they don't - on one simple report page. The first tool to answer critical questions such as was the ad visible...

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Usablenet
92 websites

Usablenet costs money

http://usablenet.com

Designed to help companies immediately and comprehensively improve web accessibility which includes Mobile.

Market Share by Top Websites

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

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

Websites Categories

1 Usablenet has better usage coverage in more websites categories. Including Food & Drink, E-commerce & Shopping, Vehicles, Health and 12 other categories.

2 Rich hasn't got a lead over Usablenet in any websites category.

Geography

1 Usablenet is leading in most countries, including United States, United Kingdom, India, Canada and 5 other countries.

2 Rich hasn't got a lead over Usablenet in any country.