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.
clouts clots glouts clouds cloots cults gluts clods colts culottes calottes glutes cultus gloats culets cleats galiots collets galoots cullets colitis glottis gluteus callets galloots colludes collates colloids galliots colds klutz kelts kilts clads gleets gaults clades klutzy caulds guilts quilts coleads keloids gallets gullets kilties collides galateas galettes gallates galletas quillets
louts glouts flouts bailouts pullouts sellouts rollouts clouts fallouts clots faults cloots holts bolts lutes fluyts jolts lots loots blots reallots maillots bloats valutas glutes cults galoots helots vaults allots lotas ballots pollutes slots solutes zlotys flotas dolts bluets elutes galliots gaults volutes pelotas gloats luteous floats volts poults flutes veloutes clouds palladous ballutes flautas saults moults molts colts galloots galiots lotus gluts melodious pilots plots salutes sluts zealots dilutes lotos shallots
cloud cloudy clout calotte clod cloddy cloot clot clotty clued could culotte glout loculate loculed