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.
culet cullet cult culti cleat collet gullet culled callet colt culotte clot cullied quillet guilt could clade gleet quilt clued cauld coled clout cloot gault called guiled coiled cooled coaled gallet colead clotty cowled gulled guilty gleety gullied collied collude quelled calotte quailed galeate galette quality collate quilled collide galleta quaalude clad clod cold gled glut kelt kilt
culet let galleta culti cullet cleat bullet collet faulty callet hauled vaulty valet fleet fillet filet gullet gleet mauled millet muled mullet palet pellet pleat puled relet ruled sault souled toilet wauled chalet quilt boleti fault guilt gallet cult built violet vault fouled howlet ballet billet bleat blet bluet leet bolete gault quillet pullet willet wallet delete sleet sallet rillet poult mallet piolet pallet owlet muleta moult miauled shauled
caul clew clue cole coulee cull cullay cully aculei oculi scull