SEO:OnPage some free tools for optimization

http://www.wordstream.com/free-keyword-tools

 http://www.keywordeye.com/

http://seobin.org/



 http://www.feedthebot.com/tools/alt/

https://www.youtube.com/keyword_tool

 http://www.removeem.com/ratios.php

 http://www.copyscape.com/

 http://download.cnet.com/Xenu-s-Link-Sleuth/3000-10248_4-10020826.html

  http://www.yellowpipe.com/yis/tools/robots.txt/

  http://tool.motoricerca.info/robots-checker.phtml

  http://sitemapinspector.com/

 http://www.snippetoptimizer.net/

  http://www.google.com/webmasters/tools/richsnippets

 http://tools.pingdom.com/fpt/

  http://www.microsoft.com/web/seo