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