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.
culti cult culet cullet culotte colt cullied clot cleat cloot gault quilt guilt could cauld clout glutei kiltie guilty clotty callet gullet collet culled gullied quillet collate collied calotte quality colloid collide clad clod cold glut kelt kilt
culti volti sault poult moult quilt guilt glutei gault cult culet gelati vaulty lati vault faulty fault built boleti loti kiltie maloti plutei saltie sheltie
caul coulee cull cullay cully aculei oculi scull