SEMRush use 25 million of most popular and expensive keywords to analyze Google search results. And we do this regularly. SemRush can show you keywords for any domain that ranking high enough to be in top 20 results or buys AdWords.
FREE SEO & PPC Keyword Research software tool, that unveil your competitors’ most profitable Ad copies & keywords. Learn from time-tested Ad campaigns.
Use the free keyword suggestion tool from Wordtracker to help your website rank higher in the search engines. Note that this tool is not related to Site Build It!
SEOdigger is an interesting tool where you can enter your domain (or competitor’s) and find out which of your keywords rank high enough to be listed within Google’s top
Quantcast is a new breed of measurement service helping buyers and sellers quantify the characteristics of digital audiences against which they can activate addressable advertising solutions.