Echo
2 websites

Echo offers both free and paid options

http://www.aboutecho.com/

Echo is the premier provider of real-time, social products.

VS

SimilarWeb Website Visits
59 websites

SimilarWeb Website Visits is free to use

http://www.similarweb.com/widgets

This widget shows dynamic traffic graphs of up to three websites for side-by-side comparison by weekly audience reach over the last three months. Use this widget to show your site's growth trend and benchmark your traffic against competing ...

Market Share by Top Websites

2 In terms of market share, Echo is clearly lagging behind, losing to SimilarWeb Website Visits in all segments.

Websites Categories

1 SimilarWeb Website Visits has better usage coverage in more websites categories. Including Computers Electronics & Technology, Business & Consumer Services, News & Media, Games and 6 other categories.

2 Echo hasn't got a lead over SimilarWeb Website Visits in any websites category.

Geography

1 SimilarWeb Website Visits is leading in most countries, including India, United States, Pakistan, Ukraine and 17 other countries.

2 Echo hasn't got a lead over SimilarWeb Website Visits in any country.