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.
muttons mutons moutons mittens mattins mutines mutinous muteness mutinies matins madonnas matinees matiness mootness meetness mueddins moodiness mateyness meatiness muddiness maddens madness maidens medians medinas middens
buttons jettons cottons rattons muttons tons nitons batons lattins toons mittens tonus ratoons pitons lattens atones pattens putons rattans kittens mutons phytons duotones rattens battens photons jetons rhytons moutons fattens ketones boutons towns newtons futons setons betons tones phaetons mattins rattoons cytons stones chitons
mutton muttony mouton moutonnee muton