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.
barrets barrettes berets burets boarts bardes berrettas birrettas barites barytas barytes brats berettas birettas burritos bruts borts bards burettes brits bourrides bruits breads beards bredes brutes britts breeds boards brides birdies brights burdies borides borates berates birds bortz brads burds braids broads broods byroads hybrids
barrets turrets terrets ferrets garrets rets aretes berets greats treats frets carets pierrots parrots carrots greets keiretsu curets territs cruets trets burets worrits
barred barret barrette barde bared berretta birred birretta burred