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.
citrine citrin citron cittern stearine strain stearin styrene sauterne seatrain stern cedarn sterna strewn strown sadiron
vitrine trine citrine latrine taurine detrain terne stearine triune sauterne butyrin terrine citrin pterin dourine train quatrain neutrino trone triene retrain seatrain eterne strain vitrain uterine