Similar Page Checker Search Engines are known to penalize websites that contain Duplicate / Similar content. Your content could be similar to other websites on the Internet, or pages from within your own website could be similar to each other. This tool allows you to determine the percentage of similarity between two pages Search Engine Spider Simulator This tool Simulates a Search Engine by displaying the contents of a webpage exactly how a Search Engine would see it. It also displays the hyperlinks that will be followed (crawled) by a Search Engine when it visits the specified webpage. Backlink Anchor Text Analysis 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. This tools help you determine the backlinks of your website and the link text used by your backlinks to Link to your wesbite. Backlink Builder This tools help you build a LOT of quality backlinks, it searches for websites of the theme you specify that contain keyphrases like “Add linkâ€, “Add siteâ€, “Add URLâ€, “Add URLâ€, “Submit URL†etc. Most of the results could be potential backlinks. Backlink Summary This tool will give you get a summary of your competitors backlinks. Keyword Density Checker Keyword Density is the percentage of occurrence of your keywords to the text in the rest of your webpage. This tool will crawl the specified URL, extract text as a search engine would, remove common stop words and Analyze the density of the keywords. Redirect Check It is very import that when a search engine comes to crawl your website it is able to follow any redirects you have set up. This tools help you determine if the redirect you have created is Search Engine Friendly. Kontera Ads Preview Allows you to preview Kontera ads on your website. Link Price Calculator This tools will help you determine the appropriate amount you should be paying (or charging) per month for a text link (ad) from each and every page of the specified website. Reciprocal Link Check This tool helps you ensure that your link partners are linking back to your website. It also determines the anchor text used by your link partners to link to your website. Check Yahoo WebRank This tool help you evaluate the importance of a URL as perceived by Yahoo and Google. Domain Stats Tool This tool helps you get all kinds of statistics of your competitor’s domains. The statistics include Yahoo WebRank, Pages Indexed by various Searcb Engines, Backlink count, Alexa Taffic Rank, and Age of the domains. Domain Age Tool This tools displays the approximate age of a website on the Internet and allows you to view how the website looked when it first started. It also helps you find out the age of your competitor’s domains, older domains may get a slight edge in Search Engine Rankings. Keyword Playground Users enter keyphrases in Search Engines to get information they need, It is VERY important that you optimize for such keyphrases. This tools help you determine key phrases and report on its monthly search estimate. Website Keyword Suggestions This tools tries to determine the theme of your website and provides keyword suggestions along with keyword traffic estimates. URL Rewriting Tool This tool helps you convert dynamic URLs into static looking html URLs. Keyword-Rich Domain Suggestion Tool Having a KEYWORD-RICH domain name is an important factor of Search Engine Optimization. This tools will suggest keyword rich domain names. Website to Country Many people wonder why their websites dont rank well in Country specific Search Engines, most of the Search Engines determines country of the website based on the physical location of the website’s IP Address. You would probably rank well in a Country Specific Search Engine if your website is hosted in the same country. This tools helps determine the Country in which the specified website is Hosted. Alexa Ranking Tool This tools allows you to get the Alexa Traffic Rankings of you and your competitors. Have fun ^-^
wow, it's great list of seo tools. but i think you have forget the biggest one: google webmaster tools