Top Ten Free SEO Competitor Tools for 2011

This years top tools for keeping tabs on your competitors’ SEO and also doing the vital research for your own SEO campaigns for Top SEO Competitor Tools for 2011. Most of the ones I have selected have some sort of free offering, but note a few require payment to get full access to the tool.

SEO for FireFox: SEO for FireFox pulls in heaps of critical SEO data points to make it easy get a holistic view of the competitive landscape of a market directly in the search results.

Open Site Explorer: Open Site Explorer is a free tool that provides webmasters the ability to see up to 10,000 links to any site or page on the web via the Linkscape web index. Open Site Explorer takes into account numerous search metrics to give you a better understanding into a sites relevancy on the web and helps you determine whether or not a site is of quality for your links.

Xinu: Find out how well your site or your competitors are doing in popular search engines, social bookmarking services and other site statistics. There are plenty more SEO and PPC competitor tracking tools out there, but these are my personal favorites. If you use a tool that you want to share with your fellow readers – drop us a note in the comments below.

Website Grader: Website Grader is a free SEO tool that measures the marketing effectiveness of a website. It provides a score that incorporates things like website traffic, SEO, social popularity and other technical factors. Free SEO tool from HubSpot that provides an Internet Marketing Report for your website.

Spyfu: Spyfu is a tool that lets you find out what keywords your competitors are targeting in the search engines. Not just keywords, mind you, but AdWords, too. All you have to do is type your competitor’s site in SpyFu’s search bar, and voila!

SEMRush: SEMRush.com was designed to satisfy your needs in advanced SEM and keywords research. We analyze 40 million keywords for 20 million domains.

Yahoo! Site Explorer: Site Explorer allows you to explore all the web pages indexed by Yahoo! Search. View the most popular pages from any site, dive into a comprehensive site map, and find pages that link to that site or any page.

QuarkBase: Find out how good a site is. Get comprehensive website details. Discover competitors. See people, traffic data, similar sites, social comments, description, social popularity and much more about websites.

SEO SpyGlass: SEO SpyGlass is an easy-to-use backlinks checker that enables you to spy on your Google competition sees factors such as link counts, optimal keywords for SEO, Page Rank factors, anchor text and many other elements.

Compete: Compete PRO Search Analytics bring search marketing into plain view with paid and natural search trends, historical search referral data, and customized filtering capabilities that let you focus on top performing keywords and traffic for thousands of websites.