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.
glossed glassed closed glozed classed gallused glissade glost calloused closet glazed glaceed callused closeout coleseed gulosity coalesced gluiest
glossed flossed lassoed loosed loused blessed blissed bloused blowsed calloused classed closed glassed deloused
gloss glossa glossae glossy glass glassie glassy glows