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.
clouds clods clouts clads clots colds colludes colloids cloots cultus glouts caulds clades keloids coleads calottes culottes collides glads colts gleds cults golds gluts quaaludes claddaghs guilds glades gledes gloats culets glutes cleats glides gleeds gluteus glottis callets colitis collets cullets galiots galoots collates galliots galloots killdees
clouds ludes bailouts clouts glouts colloids keloids illudes clods haloids molds melodious olds fluids payloads phyllodes fallouts pullouts floods rollouts bloods sloids belauds deludes bolds wolds alludes hyaloids allods lauds louts phylloids lotus lodes colds golds colludes quaaludes caulds luteous holds moulds meloids palladous folds leudes plods faulds reloads flouts sellouts leuds sloyds loads toluids eludes cheloids loids yellowwoods
cloud cloudy clout calotte clod cloddy cloot clot clotty clued could culotte glout loculate loculed