WonderSearch is a free keyword tool that automatically uses Google's data relationships (people also ask, people also search for, and related queries) to find semantically related keywords.
The results are quite irrelevant and if I uncheck 'People also search for', I have no results 80% of the time.
Pros:Clean, simple design
Cons:Either no results or irrelevant ones
Would love to be able to export the table of checked terms. I do see that I can download a csv of all terms. Also, wonder why no results for 'sat test tutor'. Finally, I would rebrand the top of page with 'Keyword Wondersearch' :)
Pros:Nice simple tool
Cons:Can't download checked keywords
Traffic Think Tank