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.
whoso whose wos woos wows whys woes wazoo whews woozy wheys was wis waes waws ways wees whiz wise wiss wuss ywis
whoso hos hoes hose hows hoys mosso whose chaos chose chows shoes shoos shows