SEO Free Tools

• For Duplicate content checker :  
  Copyscape.com

• For use the site status :  
  1). woorank.com      2). http://www.seoptimer.com/

• For Page Rank Checker :
  http://pagerank.my-addr.com/
  http://smallseotools.com/google-pagerank-checker/

• For traffic :  
  http://www.alexa.com/

• For HTML Error Checker : 
  http://validator.w3.org/

• For Broken Link Check :  
  http://validator.w3.org/checklink

• Bing Webmaster Tool:- 
  http://www.bing.com/:toolbox/webmaster

• Google Analytics:  
  http://www.google.com/analytics/
  (For find the traffic) 

• Google Webmaster: 
  http://www.google.com/webmasters/
  (For find the Error-404 & HTML improvement ) 
  Similar Page Checker: http://www.webconfs.com/similar-page-checker.php
  Google Map Maker: http://www.google.com/mapmaker
  For Domain Age : http://www.searchenginegenie.com/tools/DomainAgeChecker.php
  http://www.seologs.com/dns/domain-check.html
  http://smallseotools.com/domain-age-checker/
  

•   Robots.txt Checker:  
  http://tool.motoricerca.info/robots-checker.phtml

• Sitemap Generators:  
  https://code.google.com/p/sitemap-generators/wiki/SitemapGenerators

• http://www.xml-sitemaps.com/

•  Download Free A1 Sitemap Generator for create all On page files 

• ROR Sitemap Generator

http://www.avrams.ro/ror-generator.html http://www.sitemapxml.net/   

http://www.thebitmill.com/tool/ror_generator.html

• Ad Words Keyword Tool for Keyword Research:
   http://www.google.com/adwords/  & http://www.wordstream.com/free-keyword-tools

• Google Cache Checker: 
  http://smallseotools.com/google-cache-checker/

• Google Index Checker:
   http://smallseotools.com/google-index-checker/

• Whois Checker: 
  http://smallseotools.com/whois-checker/
  

  http://www.domaintools.com/

Check Website Loading Time

1. http://www.iwebtool.com/speed_test

1. http://numion.com/Stopwatch/index.html

1. http://developer.yahoo.com/yslow 

1. https://developers.google.com/speed/pagespeed/insights 
   
   For Brokenlink Check:
   

   http://www.brokenlinkcheck.com/