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.
summit smit summate smite samite somite summed symbiot smut symbiote smote smutty somata simioid
commit dammit summit demit vomit mite emmet reemit mammet mitt mity ambit amity boehmite emit samite smite vomito comity gambit gummite limit omit remit smit fomite somite dimity