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.
main man mane moan mina mien maun mano many mean mine mini mawn mana meiny minny manna minae meany mania meinie minnow meanie mun mon men myna menu muni hymn mown mony mono moon meno muon hymen money monie moony mynah
ain fain vain cain gain kain lain main pain rain sain tain wain chain an in