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.
armet armed aramid armada
gourmet cermet armet charmed warmed doormat permed bermed rearmed permit normed grummet ramet remeet remet armed farmed formed furmety harmed hermit gormed grommet firmed marmot termed premeet wormed format chirmed