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.
stunk stink stank stung stinko stinky stenoky stang sting satang sating siting stingo sooting stannic stengah satanic seating setting sitting sueding suiting sauteing
stunk dunk tank tung beatnik neatnik stank stink stung
stun stane steno stone stoney stony