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.
refit reft refute raft reified rift refed rivet revet right reefed refeed reffed reived revote righto righty wright
befit refit fit eft fiat haffit heft hefty left lefty reft soffit defat deft weft
ref reef reefy reif reify reive review dreigh tref trefah