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.
rescues reseeks reseaux resoaks risks rusks roscoes
fescues rescues miscues couscous discuss casques ciscoes viscus mosques masques cuscus fuscous viscous fiascoes bosques bisques basques ascus roscoes discus usques