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.
mems memes memos mums moms mamas momus mumus maims momes mumms mimes mommas mambos mimosa mamies mameys mimeos mambas mammas mamboes mammees mammeys mammies mommies mummies muumuus
ems fems haems hems gems ylems mems neems poems rems seems deems teems