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.
preowned prawned preened pruned preunite pyrenoid perennate parent pernod pronto pronota paranoid pyranoid print
browned frowned drowned preowned crowned horned ironed corned crooned groaned groined marooned prawned sorned droned drownd crownet