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.
botonnee botonee bouton baton beton biotin button betony botany butane butene betaine buttony boughten batten beaten bitten boudin
botonnee donnee moutonnee donee donne tonne townee botonee