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.
botonee botonnee bouton baton beton butane button botany biotin butene betony betaine buttony boughten batten beaten bitten boudin bedouin
botonee tone duotone stoney stone moutonnee matinee ketone botonnee atone townee tonne toney donnee donee chutnee ton