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.
cloot clot clout galoot clotty culotte galloot clod cult colt calotte cleat cloud glout culet culti gloat cooled cullet galiot collet cloddy callet cloudy collate colloid galliot clad cold glut kelt kilt
cloot loot galoot galloot lot helot galiot allot maillot flota gloat maloti hallot flout clot loti bloat lota sellout zealot zloty chalot pelota fallout flood plot blood clout galliot ballot bailout blot reallot float lout glout pilot pullout rollout slot zlote challot shallot
calo cloy cool coolie coolly cooly