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.
ywis wis wiss wise wiz was wos wuss wees woos whys ways waws waes woes wows whiz whews wheys whizz whose whoso