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.
seatrain strain stearin stearine stern cedarn citrin strewn strown citrine sadiron sauterne citron sterna
train vitrain quatrain detrain retrain seatrain strain outran butyrin trine citrine cateran pterin latrine neutrino vitrine drain deraign citrin veteran terrain
satara satire satori satyr seater osetra