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.
ras rais raws rays rias rase raise raias wrasse res race rues rosy racy raze rise reis ruse roes rose rees razz rows resee reuse resow resew resay rouse roues roose resaw razee wries reseau