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.
callused calloused gallused closed coalesced classed coleseed callosity closet glossed calcite glassed calceate closeout coaliest clast glazed glozed
callused gallused lased loused lysed allseed bloused jalousied calloused closed oilseed palsied pulsed realised deloused dialysed
callus callas callees callose callous calls coalless gallus scalls