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.
cullion clon cauline cline clone clown colin colon coloni colone callan gallon colony colleen gallein galleon galloon guyline clan clean gluon kalian kaolin kaoline
billion pillion bullion million cullion jillion mullion zillion hellion lion mullein talion galleon solion ballon villain bouillon ralline billon galloon balloon gallon gallein villein milline shalloon lin
cull collie cullay cully oculi scull