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.
crit curite grit cart curt cowrite krait cried crate cruet griot court carte caret carat curet croute caried carate cardia create gritty cardio curate carrot cardiae corrida curried curette carroty carried crowdie cowrote grid cord cred card kart grat curd grot crud credo quart curdy kraut great karat cared cured greet caird creed korat cored grate crowd grout gride crude kurta groat quirt
writ brit forrit frit crit grit merit territ worrit