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.
joule jole joual jowl jolly jowly jail jell jill
joule boule ole holey coulee muley role pole olea mole haole hoyle cole mooley hoolie quale sole soul doolee doula tole tulle woolie jole hole voile guile doolie toile solei dole vole louie rule pule mule whole tule oleo ghoulie joual coolie bole boulle foley foul ghoul yule