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.
berrettas berettas birrettas birettas berets barrettes barrets burettes breads britts burets berates barytas burritos brads bruts borts brats brits bourrides bredes beards boarts breeds bruits braids broads brights byroads brattice bards birds bortz burds
berettas berrettas birettas birrettas reatas ariettas barrettes burettes curettes syrettes rets
berretta beret barret barrette beretta berried birretta