KEYWORD TOOLS

GOTO

Once you type in a word or some words, Goto helps you locate keywords which contain those words. It also gives you a count of how many people searched for those keywords in Goto and its partners' sites. The disadvantage of Goto is that it doesn't recognize plural keywords. 

WORDTRACKER

WordTracker locates keywords which contain the word or phrase that you typed in and also helps you locate related keywords. It also gives you the popularity of the different keywords. Distinguishes between plural and singular keywords. 

7 SEARCH

Will help you locate keywords that contain these words, and will also give you a count of how many people searched for those keywords. Distinguishes between plural and singular keywords. Unfortunately, it only generates keywords in which the words that you typed in come in exactly the same order. 

iBOOST

This keyword generator does a good job of generating keywords related to the one you type in, but it does not give you the popularity of different keywords. 

GOOGLE

Google's AdWords program is intended to help you show text ads in Google when someone searches for certain keywords in Google. Google will tell you approximately how many impressions a particular keyword will get if you decide to display your ad for that keyword.