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.
radulas radials raddles roadless ratels ratals ruddles reddles rituals rattles redials riddles ridleys rodless retails rutiles rattails retallies rotls retells retiles retools rootles
cedulas radulas doulas duals duels dulias dulls dulse cutlas medullas modules modulus nodules
radula radulae raddle cradle gradual gradually