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.
sleets sallets silts salts sluts slats slots slits sleds slides slates saults solutes solates salutes salties sellouts celts silds salads sloids sloyds solids solidus zealots
leets fleets gleets sleets quillets delts culets filets bullets felts blets kelts bluets cleats gelts violets lets willets wallets gledes boletus melts muletas owlets pallets pelts pleats relets celts boletes piolets bleeds bleats killdees toilets sallets galletas fillets pullets mullets palets mallets millets billets collets rillets deletes welts pellets gullets gleeds gallets callets cullets howlets valets allottees ballets belts chalets
sleet sleety seeled sled slued soled isled islet