We do (atleast, i do) use Thesaurus very often and those text based thesaurus would list out a couple of synonyms related to our(my) word. This thesaurus, Visual Thesaurus is one step ahead of those clumsy thesaurus of the older times. Though, both of ‘em give the same synonyms for a word, the synonyms are listed out like the structure of axons in our body.

It does not come free, but Free Trials are there. So,why not use the free trials whenever you want to search something.