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.
protea protei proette pruta prate parrot pyrite pirouette prutah pirate yperite pierrot parroty prod pert port prat part purda proud pride pared peart pried pored prude purty party preed pardie purred pureed paired peered pretty poured purity perdie parade pardee pardah perdue parred parody parity purdah period periti parodoi parried peridia priedieu
protea rota torta rewrote rote rotte route wrote aorta forte cowrote croute garote garotte garrote garrotte protei reroute sorta torte