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.
gratinee gratine gratin gradine creatine gradin keratin creatin greaten cortin craton cretin curtain grutten cortina carotin carrotin cretonne guardian gueridon carotene carton croton garden
gratinee ratine retinae retine retinue routine creatine gratine serotine