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.
moor moory mor more mora morro moray morae moira moire morrow moirai mar mir murr mair miry mara mare mura mire maar miri mere mure maria marry mbira merry murra murre murry myrrh