Get Alert When Your Site's PageRank Changes

Every site owner or manager needs to track its Google Pagerank as it affects its standing in the world's top search engine. PR Tracking is a free web app that you can use to check on any URL's Pagerank and that will email you when it changes.  

http://www.prtracking.com/ 

Learn & Utilize All Of The Terms In The SEO Dictionary

Before starting a SEO campaign, it's vital that you understand and utilize the terminology to your advantage. With this SEO Dictionary, you'll have over 120 keywords to study and use to your advantage. Upon learning the definitions, you can go on to see if you've been looking over aspects of your site's SEO campaign.

http://www.submitexpress.com/seodictionary.html

Check Your Website For Broken Links

The success of the visibility of your website is heavily dependent on links, both inbound and outbound. If you have a large assortment of links on your website, it's vital that they function properly. Use this W3C Link Checker to make sure they're directing to their locations properly. 

http://validator.w3.org/checklink

Check Page Load Speed For SEO Purposes

With many of the updates in the past couple of years, Google has started to give significance to site speed. If you want a high quality tool to help you both test load time, and what is causing a higher load time, then try Pingdom. It provides your site's load speed, along with the load times for individual page elements.

http://tools.pingdom.com/fpt/

Develop Creative & Relevant Link Building Strategies

It can be difficult to start link building for a site, as there are so many options for where to start. Using this Link Suggestion Tool, you can discover many valuable links which are the top results for specific keywords & phrases. There are various types of links to discover as well, which should help you develop a diverse link building strategy. 

http://tools.seobook.com/general/link-suggest/

Check The Uniqueness Of Your Site's Content

When updating content on your website, it's vital that it be unique. If a search engine is able to determine duplicate content compared with a site it has crawled, it could hurt your rankings. Use this Plagiarism Checker, and make certain your content is 100% unique.  


http://www.smallseotools.com/plagiarism-checker/

Maintain Various SEO Data Points with this Versatile Toolset

With SEO there are so many key points of data to track, it can become difficult to remember them all. With this Free SEO Toolset, you can manage and analyze multiple data points in one location. You can run keyword search counts & phrases, analyze your web pages, and receive ranking reports for various search engines. 


http://www.seotoolset.com/tools/free_tools.html