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.
closed closet calloused glossed classed callused closeout coleseed glozed coalesced glassed gallused glost clast callosity glazed calcite coolest culicid glaceed calceate coaliest glissade gulosity
loosed closed deloused realised pleased oilseed glossed gallused coalesced lased classed lassoed leased liaised loused lysed allseed blissed blessed bloused blowsed flossed jalousied calloused callused closet coleseed glassed glozed palsied pulsed released dialysed
close calos class classy cloys cloze colossi cols gloss glossa glossae glossy