Many of you experienced keyword-junkies out there may already know about these tools, but nonetheless these are some very important tools that can be used to create the most powerful use of keywords for your website or blog. Here’s what we start out with (keep in mind, these are tools for keyword building and research and don’t delve into issues such as keyword density, page flow etc,). These are used primarily for Suggestions.

This tool can be called the “big brother” of keyword drilling based on generic ideas.It’s both a great tool for figuring out potential keyword combinations based both on ideas presented and semantic terms.
It also doubles up by showing search traffic for these terms according to Google. (Even though I believe most of the data is skewed to an extent).

OUR REVIEW SCORE
Usage – 3/5
Finding New Keywords – 4/5 Finding Search Traffic – 3/5
Total – 10/15

CREDIT: PPC HERO
Keyword Discovery is yet another service which tries to replicate the function of Word tracker. But, Keyword Discovery scores a separates itself from the rest when it comes to usability as well as finding regional search data. If you’re trying to figure out the search data for regional terms or optimizing for google.co.uk or .com.au, this is one awesome tool.
OUR REVIEW SCORE
Usage – 4/5
Finding New Keywords – 3/5
Finding Search Traffic – 2/5
Total – 9/15

I included Word tracker in this list after much resistance, not because the tool is not perfectly a keyword research tool, but because its more of an antique tool. Word tracker hasn’t evolved one bit over the years and still sticks to its basic function of suggesting keywords based on a thesaurus type model and displaying the search data based on meta-crawlers like Dogpile.
The only thing I like with Word tracker is its keyword basketing system ( almost like an e commerce site checkout ) and its massive KEI functions.
OUR REVIEW SCORE
Usage – 2/5
Finding New Keywords – 3/5
Finding Search Traffic – 2/5
Total – 7/15

Google Suggest is NOT EXACTLY a typical keyword research tool, its more of an attempt by Google to tweak their search quality. But, this tool is awesome for finding our long keywords phrases! I had to include this in the list for the amazing arrays of search phrases you can optimize your website with the help of this tool. After all, keyword search phrases are gold!
OUR REVIEW SCORE
Usage – 4/5
Finding New Keywords – 5/5
Finding Search Traffic – 0/5
Total – 9/15

This feature is similar to Google Suggest. After all, Yahoo is the second largest search engine on the net.
OUR REVIEW SCORE
Usage – 4/5
Finding New Keywords – 3/5
Finding Search Traffic – 0/5
Total – 7/15

Although search results can never be guaranteed, I can promise you that these tools are some of the best you’ll find out there and the most important objective is these tools can help you create that foundation for a very successful search engine marketing strategy.