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.
quilter guiltier kilter guilder coulter gauleiter kultur colter kelter glitter culture clutter gloater clatter clouter clattery glittery cloudier killdeer cluttery colder glider golder caldera clowder gladder gladier
filter philter milter quilter jilter kilter tilter elater plaiter vaultier gauleiter balloter coulter molter guiltier later melter violater jolter colter saluter philtra poulter belter billeter fluter halter bolter kelter haltere guilder builder gilder wilder philtre welter joltier maltier litter flitter loiter faultier palter liter saltier alter diluter siltier relater falter glitter dilater slater vaulter politer milder miltier moulter pelter plater polluter realter salter slitter zoolater shelter
quilt guilt guilty quailed quilled quillet