The SEO Toolbox from SEOmoz is a free collection of tools that provide a myriad of information to help you track the basic performance of your website and help you optimize your resource. The tools include:

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Strongest Domain Pages – by ranking the pages in order of importance.

Check Inclusion – this show whether your domain has been indexed by Google, Yahoo, and Bing.

Check Backlinks – displays the number of backlinks on Yahoo Site Explorer and Technorati and historical view of earlier backlinks where they apply.

Outbound Link Checker – reports the external sites your URL is linking to (note: wasn’t working when tested).

Check PageRank – displays the PageRank of a domain and a historical view of earlier rankings.

Domain Age – shows the age of the URL, or the date it was first spidered by the search engines.

HTTP Status – displays the HTTP status code of a website along with a link to determine what the codes mean.

Check Indexed Pages – this tool examines the Google, Yahoo and Bing search engines and displays the number of pages indexed

WhoIs – shows a domain’s registration information (note: appeared to not be working when tested)

IP location – determines a not-100%-accurate geographic location of an IP address via Google Maps and AJAX.

As free tools go, this package offers some limited information that some may find helpful. Overall, it doesn’t compete well with the many other excellent free tools available either in ease of use or information displayed, i.e. only one small bit of information per tool returned. Paid subscribers ($79 – $229/mo.) to the service get the full reports.