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.
cheddars chuddars chadars cheders cheaters chudders shedders chiders chadors shudders chowders chatters chitters shaders shatters sheeters shooters shouters shutters shoetrees
cheddars chuddars adders deodaras cedars ridders padders mudders redders bedders dodders bidders budders fodders chadars wedders dares codders shedders dears deodars midairs lidars udders madders siddurs rudders redears nodders gadders judders radars tedders ladders kidders gaydars widders wadders chudders shudders
cheddar cheddary cheder chuddar chudder shedder