Aaron Wall is a search engine optimization consultant at Clientside SEM and the author of the SEO Book blog. Aaron lives in Oakland, California. This time he takes a look at the top SEO tools.

The number of internet marketing tools launched over the past couple years has been staggering. Many of them are both free and highly valuable. SEO, which was once considered a bit of a seedy niche, has grown with search to become a mainstream marketing practice, with…

1. Google providing Webmaster Central, a blog for webmasters, & many of the best free SEO tools
2. Yahoo! offering a paid inclusion service & a webmaster focused tool by the name of Site Explorer
3. Microsoft offering SEO services

This article aims to highlight the best search engine marketing tools.

Keyword Research
Keywords are at the core of search, so any effective SEO campaign starts with keyword research. My 4 favorite keyword research tools are

1. Google AdWords Keyword Tool
2. SEO Book Keyword Tool
3. Google Traffic Estimator
4. Microsoft Ad Intelligence

Google AdWords Keyword Tool
Given Google’s enormous search marketshare they have the most keyword data, though typically they have been less open than others with sharing data. Recently the Google AdWords Keyword Tool has started to show estimated search volumes using numbers (rather than graphs). Next >>

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