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.
linn lin liny lain loin lien lion line lino liney liane liana lone lune lane lown leno lean lawn loan luna loon luny lanai lauan lawny leone llano loony