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.
femmes femes fems fames fumes foams famous
femmes shammes gimmes fumes hommos jimmies cameos gimmies mameys coombes cames fames games emeus mommies shimmies hummus ramies mammas jammies commas gummas combes femes mums hames hemes momes homeys siamese shammies names tammies shammas dummies chymes chammies demes wammus tummies pommies tomes immies mummies nomes rimes dimes memes zymes mammeys cymes smews limes roomies lames mimeos homies kames gnomes mesa mess mimes amies ammos mumms cammies emmys mamies comes mems bombes moms homes biomes heaumes gambes jemmies shames jambes limeys mews commies gammas demies maes romeos lemmas semes rummies mammees summas mammies rhymes domes ramees mommas times tames pomes tommies wames dames whammies chimes emes shammos neumes shmoes yummies