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.
traitor triter trattoria trattorie territory treater hydrator deaerator tartar tarter trader tardier tartare tartier treader trotter troutier derider tireder torture
traitor curator territory heritor gyrator gyratory juratory creator barrator narrator moratory orator oratory praetor sartor deaerator hydrator aerator
trait treat treaty trite strait strata strati