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.
hymns hymens muns mans mons miens manse minas minus moans mains muons monos manes manas manos minis mines menus monas mensa mynas moons mense munis means manus mannas mensae monies manias mannose meanies meinies menisci minnies minnows meanness
hymns wynns wyns hymens mans mons muns mynas dynes tynes yens yins