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.
prate pirate prat parade pyrite protei protea part yperite port proette pert purty prude peart pride preed pruta pored pried purda party pared pirouette paired pureed purred prutah periti parity pardee purdah peered pretty poured purity parrot parred perdue pardah pardie perdie parried parroty peridia pierrot priedieu pard prod
aurate prate narrate karate grate pirate rate derate cirrate gyrate lyrate phorate deaerate berate carate irate urate serrate crate ferrate hydrate aerate cerate borate orate curate rat hereat quarte terete karat rato ferrite write aortae cowrite variate kraut seriate baryte diorite groat sortie garrote drat shortie whereat cerite great virtue torte barite arete trite irade aureate carte trait brat derat parade rote rewrote errata jurat pyrite carat prat curite create garote grade cowrote laureate grat wrote trade verite korat rewrite brute forte frat norite corrade lariat krait tirade muriate rite rete treat yperite charade tiaraed
para parae prao prau pray proa spray