GoogleFight is a fun tool to compare the number of results on Google between two keywords. Just type in the two keywords you want to compare and watch the "fight". Of course the winner is the keyword that generates the most results on Google.

WhoIsRanking is a keyword capturing, displaying and analyzing tool that any individual having an online presence can use to:

• Capture and View Keywords used to visit the site
• Link directly with advertisers by using the widget on the site
• Use it as a social bookmarking service
• A nice tool on the homepage that visitors can use to conduct Search Engine Result Page (SERP) Analysis

WhoIsRanking vision aims towards the goal of providing vital information necessary to make strategic choices that give any online presence a strategic advantage related to search engines ranking of a keywords. Here is how WhoIsRanking describes it:

They say that in the land of the blind, the one eyed man is king…

kl.am is a search engine friendly URL shortener, created by Raven Internet Marketing Tools. Not only is kl.am incredibly short, it’s also the first URL shortener to support Campaign Variables. Campaign Variables allow you to tag links with campaign data that can be tracked by popular stats services, like Google Analytics.

kl.am offers bookmarklets that allow the use of the service right from your browser, without the need to visit the site, and has a full API which allows access to all of the features of kl.am, including referral and click-through statistics.

SERPrush is a free SERP checker which will enable you to check your search engine position in Google, Yahoo and MSN for the .COM and UK versions. The SERP tool will allow you to search the top 25 pages for each search engine.

SEOrush is a one touch resource which provides you a FREE SEO report for your URL or a competitors URL. The report will return On Page SEO and Off Page SEO as well as social presence, indexed pages, validation, meta information, various ranks and standard domain information.

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. It also provides some basic advice on how the website can be improved from a marketing perspective.