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.
parody pardy prod pard parroty parodoi party proud pared perdy pardi parrot parity paired period parade parred pardee pardah pardie parried part peart pried pored preed purty pride prude perdu perdie purity protea protei pretty peered pureed poured purred perdue pierrot proette priedieu
corrody corody parody grody rod curdy erode rowdy lardy broad neuroid sarode carroty joyrode period crowdy sarod sciuroid droid tardy trod weirdy choroid proud corrode viroid crowd broody rood byroad parroty hardy pardy perdy road brood prod aroid nerdy rode zeroed hydroid toroid trode wordy shroud
pro par sparrow spar pair para parae pare pareo pareu pariah parr parry pear prao proa prow pyro spare sparry