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.
mammary mammer mummery maimer memory mimbar mummer mimer member memoir
mammary nummary summary marry ambary mummery remarry smeary summery dammar shimmery mar
mamma mammae mama mamba mammee mammey mammie mammy momma hammam