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.
revert revered refereed referred reoffered refired refried
vert avert evert covert overt revert sievert divert vertu cavort leveret poverty chevret
reverie revere revery raver reaver reefer reefier refer referee reiver riever river rover breviary brevier