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.
mot mote moot mott moat motto motte motey mod mat moiety met mut meta mute mity mete mite mate meat mitt mode meet maut modi matt mood mutt matey matte meaty moody mooed meadow meoued