AdWords Keyword Tool with its latest functionality and feature changes reminds me to the old one more than ever. - match type - selecting ad group - showing which keywords are already in an ad group (I missed this big time) - automatically applying geo settings based on the selected campaign
You can find many other tools in seo.But,Adword keyword is the best tool for SEO.You can search any relavent keyword and it gives u a great and important details for your keyword.. This way, you do not need to pay money for other Keyword Research Tools.