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.
cramoisy cramoisie crambos crams cramboes creams cormous crambes gouramis crummies grams corms gouramies corymbous corymbose kermis caroms cremes gramas crumbs crimes grumose carroms grumous grammes grammas curiums corymbs gremmies gorms grimes grooms grumes karmas kermes kormas
cram caramba crambe crambo cream creamy scram