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.
muss mussy mus mousse mess moss mass muse miss mossy mousy massy mouse missy moues messy massa meous mosso masse miaous missay mousey mos mas mis messiah mews mise mays mows mesa maws miso masa moos maes moas meows moose mosey muzzy
buss fuss cuss gauss muss puss suss wuss us