OneStat
674 websites

OneStat offers both free and paid options

http://www.onestat.com/

Reduce costly downtime. Don't lose visitors and customers. Our Uptrends worldwide checkpoints will monitor your website, network and services from around the globe. Alerts by SMS / text messages/ RSS, IM or email.

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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 OneStat is leading in The Entire Web.

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

Websites Categories

1 OneStat has better usage coverage in more websites categories. Including Hobbies & Leisure, Arts & Entertainment, Science & Education, Computers Electronics & Technology and 14 other categories.

2 Usablenet is leading in Food & Drink, E-commerce & Shopping, Heavy Industry & Engineering, Lifestyle and one other category.

Geography

1 OneStat is leading in most countries, including Netherlands, United States, Belgium, United Kingdom and 62 other countries.

2 Usablenet is leading in Russia.