Website Image Speed Test - Beautiful & easy free analysis of the images on your page
Smaller - Make your websites load faster
Checkbot - Checkbot will boost the SEO, speed and security of your site by checking you're following 50+ web best practices. Browser extension with free and paid plans.
Website Grader - Grade your website's strengths and weaknesses in seconds.
Global Website Speed Test - Test website load speed from 18 cities, including 3 in China
Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.