Google Adwords Keyword Research Tool
Generates keywords to be used for Google adwords campaign (PPC). Can be used for SEO keyword analysis as well. Report will indicate keyword search trends and search performance.

Deadlinks Checker
Launch the spider to check for broken links as its name suggest. Report will be categorized into on-site link as well as outgoing links to other domains.

Backlink Checker
Check for reciprocal links from other web sites indexed by search engines. Report will show Google Pagerank values of backlinks.

Link Popularity Check
Enter your URL into the box and compare your site with your competitors, or those sites that are from similar industry. Report will show the number of backlinks that are actually found on the major search engines.

Alexa Traffic Ranking
Check the ranking of your web site on a global basis. Indicates traffic details and page views in a graphical format.

Search Engine Saturation
Shows the total number of pages of your web site that is indexed and cached by the various search engines. The more number of pages, the better.

Google Analytics
Generates nice traffic report for webmasters. Report will show number of visitors every month, which country they come from, the pages that they have viewed etc... Registration is free.

W3C Html Validator
Used to validate HTML source code of web site. Sites that conform to the validation standard will be error free. HTML correct web sites are normally ranked higher on search engines.

W3C CSS validator
Used to validate css files of your web site. Sites that conform to the validation standard will be error free. HTML correct web sites are normally ranked higher on search engines.

Google Toolbar
Handy to find the Pagerank of web site. Google Pagerank is Google's technology used to rank web sites. Higher value means that the web site is more important.

SEO Tools- SEO CHAT

Comprehensive advanced tools from Seochat.com.

SEO Tools - SEO Book

More SEO and PPC tools from Seobook.com.