well some of the keyword tool i use are digitalpoint.com. if you look into the site you can find a keyword tool that allows you to look up keywords with a limited result. I also I have keyword analzer. the older addition and for some reaosn it still allows me to search for keywords for free despit the newer versions charging you an arm and a leg to search for those keywords that everyne loves. I do sometimes the keyword tool on oveture but i really dont use it that much
I use http://www.digitalpoint.com/tools/suggestion It works fine for me and gives me Accurate results too