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.
calloused callused gallused closed callosity closet coalesced glossed classed closeout coleseed glozed calcite glassed calceate coaliest clast glost
loused bloused calloused deloused loosed blowsed flossed jalousied callused closed gallused glossed
callous callose callus gallous