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.
corymbs corymbous corymbose corms crumbs cormous crambes crambos cramboes gorms crams cremes kormas caroms crimes creams curiums carroms quorums crummies gouramis gouramies grams gramas grimes grumes kermes kermis grooms karmas grammas grammes kermess kirmess