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.
mows meows mos miaows maws moss moas moos mews meous mossy mouse moues moose mosey mosso mousy miaous mousey mousse mus mis mas maes muss mesa mass masa mozo mess mise miso mays miss muse massa masse massy messy mezzo missy mussy
bows mows shows wows dows rows powwows pows nows knows miaows bowwows meows lows cows jows hows vows sows tows chows yows os