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.
parroty parrot party parity parody part pierrot purty peart pardy parred pretty protea purity protei parodoi proette parried prod prat pard pert port pared pardi proud perdy prate pirouette period pyrite periti parade paired pardie pirate pardah purred pardee yperite
parroty carroty rooty ferrety carrot corrody garrote grotty grouty parrot pierrot trouty rot
parr pareo parry sparrow sparry par pro