Google Adwords Keyword Tool is now replaced by new Keyword Planner which has most of data available from old keyword tool and has many advantages over it. Keyword Planner lets you build a new Search Network campaign more efficiently. Insights are improved for keywords, ad groups, bids, and budgets etc. Also provides you better historical statistics and traffic estimates.
WP Keyword Suggest is the new easy to use WordPress SEO keyword suggestion tool that automatically get fixed at the top right corner (right above the ‘Publish’ metabox) of Add New & Edit Post admin pages. It allows you to look up SEO keywords from autocompletes of popular search engines like Google, Yahoo, Bing, Amazon & Blekko etc. You search for keyword suggestions and add the selected keywords to Post Tags and Title from the keyword suggestion widget itself.