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