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.
pedalos pedals petalous petals peddles patulous pettles patellas poetless padles paddles piddles poodles pottles puddles
pedalos dals radials pedals modals medials medals cattalos cattaloes catalos cataloes ideals duals dials deals dales dahls petalous redials