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.
limn limen liman limina leman lemon lumen lamina lawman lawmen layman laymen lemony lomein lumina laminae
lima limb limba limbi limbo limby lime limey limo limy