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.
ambit amity amid amide amido
ambit gambit dimity dammit summit smite samite reemit numbat mite mitt mity amity boehmite emit vomit fomite vomito combat comity commit gummite limit omit remit smit somite symbiot demit wombat