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.
amucks amoks amicus ambiguous amigas amigos
mucks jumbucks shmucks amucks limbecks mucus umiacks smocks sambukes macks micks mocks hommocks bemocks tombacks mammocks oomiacks sambucas hummocks smacks gimmicks hammocks