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.
pows pois pews paws poos pose posy powwows poohs posse poesy poise pious hypos pis pus pes psi pas poussie pees peso piss hyps puss pays peas pehs pies pass piso pias pase psoae paseo paise psoai passe peise pease pause paisa hypes pussy
bows mows shows wows dows rows powwows pows nows knows miaows bowwows meows lows cows jows hows vows sows tows chows yows os