Website Speed Ranker - Compare how fast your website loads vs your competitors
Website Grader - Grade your website's strengths and weaknesses in seconds.
Smaller - Make your websites load faster
PageSpeed Ninja - One-click page speed boost for WordPress
Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.
Dareboost: Website Speed Comparison - Check how fast your website is against your competitors