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.
joual joule jail jole jowl jolly jowly jell jill
joual coaly shoal doula zoeal soul quale quail koala goal coala boule coal joule ghoul foul foal dual shoaly