SEO Chat
The keyword density tool is useful for helping webmasters and SEOs achieve their optimum keyword density for a set of key terms.
http://www.seochat.com/seo-tools/keyword-density/

Webuild Pages
Offering search engine optimization services (SEO Services). Google optimization and beyond. Offering consultant services as well as contract work out as well.
http://www.webuildpages.com/seo-tools/spider-test/

Web Confs
Backlink Anchor Text Analysis - Backlink Checker. Quality backlinks is one of the most important factors in Search Engine Optimization.
It is not enough just to have a lot of backlinks, it is the Quality of backlinks along with the Quantity that help you rank better in Search Engines.
http://www.webconfs.com/anchor-text-analysis.php

Alexa
Website Traffic Comparisons.
http://www.alexa.com/

Search Bliss
Check your website's Alexa Web Rank without the toolbar. Alexa Rank Checker also displays your Incoming Links and Reach Rank.
http://www.searchbliss.com/rank.asp

Developers Evrsoft
One of the world's largest webmaster resource websites. Web development news, free webmaster tools and services! Thousands of articles.
http://developers.evrsoft.com/find-traffic-rank.shtml

SEO Moz
SEOmoz provides companies around the world with consulting, Internet marketing and search engine optimization services. Although our home offices in Seattle, WA serve as our base of operations, we're frequently found globetrotting across the US, Canada & Europe. Our goal is to provide a high level of service and education to businesses, individuals, non-profits and government organizations so they can best leverage the unique reach of the Internet to increase visibility and achieve success.
http://www.seomoz.org/trifecta

SEO Content Solutions
We are an SEO Copywriting company that caters to SEO companies and web developers looking to value added services and businesses that want to reach out to their audience, increase conversions, and improve their placement in the search engines.
http://seocontentsolutions.com/

SEO Workers
This SEO Analysis Tool is to help you analyze and measure the ranking potential of your web pages. It doesn't only analyze the Meta Tags of your pages, rather it tries to use the same spider technology as the search engines spiders them self.
http://www.seoworkers.com/tools/analyzer.html

Self SEO
Welcome to Self SEO. The idea of this website is to combine various SEO tools, internet tools and webmaster tools in one place and help webmasters to build a successfull website. In addition to that, you will find some webmaster articles here with great internet related tips and tricks.
http://www.selfseo.com/

XML Site Maps
A sitemap is a way of organizing a website, identifying the URLs and the data under each section. Previously, the sitemaps were primarily geared for the users of the website. However, Google's XML format was designed for the search engines, allowing them to find the data faster and more efficiently.
http://www.xml-sitemaps.com/

Market Leap
Marketleap provides 100% organic search engine marketing services. Visit us today to learn more about our many search engine optimization and email marketing products and services.
http://www.marketleap.com/

Webmaster Toolkit
Keyword Research Tool :: Webmaster Toolkit.
http://www.webmaster-toolkit.com/keyword-research-tool.shtml

Submit Express
How popular is your website? This tool will show you how many other sites are linking to you. Most search engines use this data to calculate how popular your website is. The more links to you, the better your search engine rankings will be. You can even provide some competitors' URLs to compare your site to theirs.
http://www.submitexpress.com/linkpop/

Axandra
Professional SEO software tools for website promotion, search engine submission, link building and more.
http://www.axandra.com/

Web Ceo
SEO Software by Web CEO (website optimization, submission and promotion software). SEO Software 'Web CEO' includes 12 SEO Tools in One Powerful SEO Suite. Optimize, promote, analyze, maintain Your Site with the only complete SEO Software - Web CEO.
http://www.webceo.com/