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.
korat kraut krait karat karate grat kart grate crate kurta court groat great carat curate carate create corrida cowrite cowrote corrade cart cord crit curt grad grit grot
korat rat ort trait urate torot torta derate drat sort deaerate prate cirrate hereat port karat gyrate frat aerate short whort errata curate fort bort forte carat karate brat krait lariat mort orad ferrate grate court rate irate carate boart borty forty aorta aurate berate crate great jurat phorate orate rato borate kraut lyrate grat dorty wort whereat treat torte tort hydrate derat groat sorta serrate cerate prat pirate narrate shorty
kora korai kor kore kouroi okra