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.
berettas berrettas birettas berets birrettas burettes breads britts burets barrettes barrets berates barytas brats bruts brits brads borts boarts braids broads bruits bredes breeds beards brights byroads brattice burritos bards birds bortz burds bardes boards brides broods brutes
ariettas berettas berrettas birettas birrettas reatas ariettes barrettes burettes curettes pirouettes proettes syrettes
beret beretta berate berretta biretta buret burette