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.
caldera caldaria colder clowder collider colluder coleader cloudier cloddier golder colter glider clouter gladier clutter gladder guilder clatter coulter clattery cluttery killdeer gauleiter kelter kilter cloture culture glitter gloater quilter
caldera bouldery colder colluder aulder balder gilder bolder boulder blader polder solder solider mouldier welder moldier wielder milder wilder killdeer shoulder golder lader builder slider alder collider holder folder gelder eluder elder fielder older soldier bowlder moulder deluder molder welldoer melder wieldier guilder shielder glider yielder
called callet cauld clade coaled scald scaled