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