Backlink Checker counts the Page Rank of your backlinks. To use it, just enter your URL and Google API Key. If you don’t have an API Key, you can fine one at www.google.com/apis. They are free and very easy to get.

Google PageRank Calculator - enter the “Number of Links From Each Page” that links to the page in question to get a Page Rank estimation.

Google PageRank Prediction attempts to determine a future Google PageRank value of a particular site. The tools does several calculations to come to this figure.

Google PageRank Report checks the Google PageRank values for the list of URLs.

Multi DC PageRank Checker will query the varios Google Data Centers to check for any changes in PageRank values for a website.

PageRank Lookup allows you to check the Google PageRank values of multiple URLs at once. A time-saver for keeping tabs on you and your competitors’ PR values.

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Search Engine Placement Check is a verification tool that checks if your site is in the top three pages of a search engine result for a specific keyword. It’s important to be in the top 3 pages of a search result because most people using search engines don’t go past the 3rd page.

Search Engine Positioning check your Search engine positioning (SERPS) on Yahoo, Google, All The Web. MSN and Hotbot. Just enter your keyword/keyword phrase into the “Keyword” submit box, then enter your URL into the field labeled “Your URL” and specify the “Page Depth” this variable tells the spider how far to go page wise before giving up trying to find your rank. If you are not in the serps within “X” specified pages then the message “There is no information for your query” will come up. It doesn’t really mean there is no information for your serps, it just means that you don’t rank for that keyword within your specified page depth.

Search Engine Ranking Report Enter your own keywords (one phrase per line) and domain to find out where your domain ranks for a set of keyword searches.

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Dogpile Search Comparison gives you the top results from Google, Yahoo! and MSN.

Google vs Yahoo Graph looks at the results from Yahoo and Google, finds the similarities and then gives you a graphical display of what results are in both search engines. This illustrates that optimizing your site for both engines is not a very easy thing to do, but not impossible.

Google-Yahoo-Ask Search search engines differ more than you think. Compare Google, Yahoo, and MSN with one search.

Myriad Search is a search engine that combines Google, Yahoo!, MSN, and Ask Jeeves in one screen. You can modify the individual influence of each search engine in the results.

Thumbshots Ranking is a fun way to learn about search engines and optimizing a site’s ranking.

Yahoo vs Google compares top 100 search results from Google and Yahoo!

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Datacenter Quick Check checks all Google datacenters for BackLinks, PR and Ranking of keyword.

Future PageRank Tool will query Google’s various data centers to check for any changes in PageRank values for a given URL. Usually all data centers will output the same, but if queried during an update, you might get a glimpse of any upcoming changes in your chosen URL’s PageRank value.

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Alexa Page Ranking allows you to cut and paste a number of domains. Get the 3 month Alexa Ranking. If you want to check Alexa Ranking for a number of sites, you can browse your harddrive and provide a list of domains.

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Yahoo Search Rankings is a free online SEO tool to check the position of your website in the search engine of Yahoo.

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Advanced Google Search Methods - this is a tool is to search Google in many special ways. A useful resource for search engine optimization (especially keyword research) among other things.

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