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.
kernel kernelly crenel cornel corneal coronel crenelle carnal carinal cornily cornual coronal cranial granola greenly carnally
cornel kernel charnel darnel journal perineal trunnel tarnal carnal serenely pronely peroneal coronel crenel terrenely vernal borneol bairnly runnel diurnal ronnel corneal
kern kerne karn kirn krona krone