Traffic Flow SEO

I get asked a lot about how to find free keyword research tools, so I decided to make a quick list of some of the more popular tools (Web-based and downloadable). They are not listed in any particular order:

Keyword Tracker (free edition)

Keyword Discovery (free tool)

Google's Traffic Estimator

Yahoo's Traffic Estimator (via a little outdated and slow Overture database)

SEO Book's Traffic Estimator

Digital Point's Keyword Tracker

wordpot.com

Good Keywords (download software)

Good luck on your keyword research!