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.
matt matte mat mate moat mutt meat maut mitt mott meaty motto matey motte met mot mad mut mute mity meta made mead mete moot meet maid mote maud mite media motey