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.
crowdy crowd corody crowdie corrody grody curdy cruddy corrode carroty card curd cred crud cord crude cored cried creed credo cured caird cared carrot grotty cardia croute cardio greedy caried curred grouty cardiae carried corrade corrida cowrite cowrote curried
rowdy crowdy broody corody corrody crowd grody parody wordy
crow cowrie cowry craw crew grow