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.
gnomon nomen nomina newmown nominee noumena numen pneumonia numina
jomon gnomon mon ramona toman daimon summon soman simony nomen mony moan moon moony mown ammono women yeoman mono muon bemoan somoni simoon woman demon camion daemon mammon lemony kimono womyn lemon roman gammon omen common newmown yeomen
gnome nom noma nome nomoi anomie anomy genom genome