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.
creamer creamery creamier crammer crimmer crumber crumbier crummier gramary grammar grimier grimmer groomer grummer krimmer
creamer dreamer reamer creamery warmer termer dreamier premier creamier harmer crammer framer farmer armer roamer rammer charmer
creamy cream cram caramba coremia crambe crambo creme scram scream