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.
core cor corrie cowrie gore cure cory coir care kore crew cooer coria curie cowry currie curiae cry cur gor car cru kor curr goer craw crow kora gory grue gree carr grew grey carry curia curio curry korai kyrie quare quire
bore fore shore wore whore tore dore sore pore ore more lore kore gore core chore yore re or