I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
tract tricot tracked torquate direct traiked tricked troaked trocked trucked
bract tract react bearcat erect eruct forgat fracti haircut coerect correct meerkat porrect preact reerect direct
track torc traik triac trick trickie tricky troak trock truck turaco turacou strake