Web Performance and SEO

http://performance.webpagetest.org:8080/ -> Excelent report for performance

"Pagetest is an open source tool for measuring and analyzing web page performance right from your web browser. AOL developed Pagetest internally to automate load time measurement of its many websites, and it has evolved into a powerful tool for web developers and software engineers in testing their web pages and getting instant feedback. We decided to release it to the grander web development community to further help evolve it into an even more useful - and free - web performance tool."

http://builtwith.com -> technology profiler

"BuiltWith is a website analysis tool, providing technical analysis and SEO optimization information to further your website's marketing, sales and navigation effectiveness."
--
Eduardo R. Coll