When it comes to Search Engine Optimization (SEO), there are all sorts of techniques you can practice to try to get your site indexed as high as possible in the search engine rankings. In addition to these many techniques, there are also a variety of guides and tools found around the internet that webmasters can use, many of which are completely free to anyone.

This post is an attempt to collect the best available Search Engine Optimization resources from around the web and provide them to you in one post. If you know of any useful ones that I’ve missed, please let me know in the comments below!

Search Engine Optimization Guides

Search Engine Optimization Tools

  • Advanced Google Search Methods – Tool that allows you to search Google in a variety of unique ways. Great for keyword research.
  • Backlink Analyzer – Popularity and link analysis tool.  It shows what anchor text is linking into a page or site.
  • Backlink Checker – Checks backlinks pointing towards your website. Also great for checking out competitors backlinks.
  • Blacklink Watch – Shows you the anchor text and PageRank of inbound links for free
  • Digital Point Keyword Tracking Tool – Tool that shows you the results of your query from both Wordtracker and Overture for determining which phrases are searched most often.
  • Google Datacenter Watch Tool – Lets you do a search on Google from their 700+ data centers.
  • Google Rank Position – Shows Google PageRank and PageRank position, number of indexed entries, and Google directory status.
  • Keyword Density and Prominence Tool – Allows you to analyze keyword density of a specific web page and its tags.
  • Keyword Selector Tool – Lets you easily enter keywords and search for related searches and how often those keywords were searched for in the last month.
  • MultiRank Checker – Allows you to check your sites ranking while at the same time checking up to 9 competitors.
  • Ranking Tool – Tool by SEOMoz that lets you check your search engine ranking of up to 5 keywords per day.
  • SEO Analyzer – Provides a report that gives a quick analysis of your website.
  • Strongest Subpages Tool – Provides an organized report of the top pages on your website.
  • Tattler – Link analysis tool that allows you to pull backlinks from Yahoo Site Explorer. You can run a single URL, or multiple URLs, and you can grab additional backlinks from the returned results simply by right-clicking on any URL. Can also export all your data to an Excel spreadsheet.
  • Top 10 Analysis Tool – Shows how your link profile compares with the link profiles of the top 10 ranked sites.
  • Yahoo Search Rankings – Free online tool to check your Yahoo! search ranking position.

Search Engine Optimiation Firefox Extensions

  • SEO For Firefox – Provides a ton of information directly from the web page or the search engine results page. Includes Google PageRank, cache date, domain age, backlinks in Yahoo, number of .edu links, the number of cached pages, and many other stats with a simple right clic.
  • SEO Quake – Adds SEO results to search results and on top of each webpage.
  • RankQuest SEO Toolbar – Provides access to more than 30 SEO tools in a web browser toolbar.

Is their a free SEO guide, tool, or Firefox extension that you use?  Let me know in the comments below!