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.
gore gor gree grey core kore goer grue grew gory cowrie gooier corrie kor gar cor gaur cory coir kora guar cure care grow guru gray crew cooer coria cowry curie guiro gurry korai kyrie quare quire
bore fore shore wore whore tore dore sore pore ore more lore kore gore core chore yore re or