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.
metals metalise medals metols mutuals mettles medials meatless metalize models metallize motels modals medleys mutuels meddles mateless medullas mutualize matelasse matless middles modules modulus motiles motleys mottles muddles mutules modiolus
buttals petals vitals totals metals ratals medals ratels tels nettles rotls betels pedals catalos rituals coattails fettles dials cattails hotels redials teals medials talus kettles retails stales chattels whittles phytols tittles tattles dottels steals rootles mottles settles cutlas radials rattles pettles ideals littles guttles sotols butyls kittles pottles butles dals atlas deals beetles modals battles bottles pedalos tils footles dahls tails duals talas boatels cuttles taels vittles talls stalls botels metols mutuals cattalos tales mettles rattails cuittles details ketols motels dottles titles dales tootles wattles wittols shuttles
metal meatal meatily medal meetly metol mettle