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.
smocks smacks smokes smogs sameks smeeks sumacs samekhs sambucas sambukes
bemocks mammocks hummocks hammocks hommocks smocks mocks amucks umiacks amoks smokes mucks oomiacks gimmicks smacks mocs macks limbecks micks jumbucks tombacks mokes shmucks
smock smack smog smoggy smoke smokey smoky