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.
fadein fatten phaeton
fadein codein din den hoyden iodine deny codeina dino coden dean ladino deni dene lutein loden hoddin medina mueddin radian redeny sadden stein deaden duodena wooden shodden deign maiden boudin leaden iodin dine aedine codeine hidden laden beduin louden hoiden madden hodden median bidden midden odeon redden ridden sodden sudden dudeen widen chidden hyoidean