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.
clozes closes glozes calloses calces glazes callouses colzas classes calices glosses culices calyces clauses calesas glossies coleuses calluses cullises colossus coalesces colessees gallowses coulisses glaces classis glasses glossas galluses glassies
clozes glozes dialyzes sleazes realizes glazes closes calloses floozies blazes loses looses lezzies lezzes lazies lazes lassoes xyloses dualizes
cloze calos close cloys colossi colza gloze