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.
photon phyton phaeton phytin phytane futon vodoun voudon voudoun
photon ton atony atone town toon tony phyton baton jetton mouton cottony mutton newton piton ratoon rattoon cyton stone duotone cotan betony tone ketone bouton button buttony futon phaeton beton biotin jeton cotton codon muton muttony niton puton ratton rhyton seton stony chiton
phot photo pht phat phut ephod