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.
memes mems momes memos mimes mamies moms mamboes mums mammees mummies mammies mommies momus mumus mamas mumms maims mambas mambos mameys mammas mimeos mimosa mommas mammeys muumuus
femes hemes memes emes semes demes ems jemmies zymes cammies commies gambes emus bombes comes mimeos neems mesa memos names cameos jimmies seems amies gnomes rems mews rimes mamies cames semis geums combes beams dimes siamese shimmies shammes chymes chemos whammies tummies tomes teems tammies dummies demies ylems cymes pommies mammees fems roomies heaumes mummies ramies deems mammies pomes nemas homes immies lames momes jambes limes jammies neums mommies biomes ramees coombes limeys gimmes gimmies mems mammeys hames nomes poems fumes gems homies haems mameys emeus fames maes games rhymes kames neumes rummies romeos mimes mess seams bemas hems smews reams homeys femmes dames demos domes tames teams times tommies wames chammies chimes shames shammies shmoes yummies