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.
coalesced coleseed callused coaliest calloused closed classed coolest calceate gallused calcite culicid glaceed glassed glossed callosity clast
coalesced leased blessed fleeced coleseed pleased released
coalesce coals coles calesa caules coalas coalless colessee coleus colies scales cols