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.
merlon merlin marlin marline
orlon merlon reloan berlin carillon carlin courlan marlin merlin purlin purloin sirloin trillion
merl merle marl marly merely merrily