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.
moat mat mot mote maut matt moot meat mate mott matey motey motto matte meaty motte moiety met mod mad mut made mute mity mood maid maud mite meta mitt meet modi mead mode mete mutt media moody mooed
boat coat goat moat oat doat shoat at