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.
corrody corody corrode crowdy cord carroty corrade corrida cored grody curdy crowd cruddy carrot curred carried cowrote curried crowdie card cred curd crud creed caird crude court cured gourd cared gored cried greedy grotty cardia caried gourde garred croute grouty cardiae cowrite garrote
corrody rowdy broody carroty corody corrode crowdy grody parody parroty rod