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.
minnows minnies mannose mains manos miens monos minis minas mines minus mannas meinies muns mons mans meanness moans monas moons mincy manse mensa manas menus means mense manus muons mynas munis manes mince hymns moneys hymens mensae manias mynahs monies meanies menisci monoecy
minnows winnows nows knows annoys enows mannose knowns nonnews snows tannoys nos