I recent discovered google suggest and found it very useful as a keyword tool http://www.google.com/webhp?complete=1&hl=en
Hi Dear, You can use wordtracker and seobook's best tool for keywords. Both are the best tools and Most of the webmasters are using wordtracker and seobook's tool. You can check seobook's tool from below url. (open with http or www if not) tools.seobook.com/keyword-tools/seobook Thanks Jay
You can not now rely on overture, its not updating database. you should follow This link, Keyword Suggestion Tool Thanks, Chaitanya.
check out platinum keywords, it gives the daily searches and how difficult it is to rank for a keyword, www.website-promoter.net
Hello Dear , I have some keyword suggestion tools. these are following............ Overture Suggestion tool; http://inventory.overture.com/d/searchi Â… uggestion/ Google AdWords Keyword tool; https://adwords.google.com/select/KeywordToolExternal Miva Suggest; https://account.uk.miva.com/advertiser/ Â… GenBox.asp Digital Point KW suggestion tool; http://www.digitalpoint.com/tools/suggestion/ Thnx