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.
creatine creatin cretin gratine gratinee cretonne gratin cortin craton cortina gradine curtain greaten carotin keratin carotene carrotin croton gradin carton cartoon crouton cartoony cowritten cardon cordon garden
creatine ratine gratine retinae retine retinue routine creatin gradine gratin gratinee keratin martin ceratin serotine
create carat carate caret crate cruet curate curet curette great ocreate