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.
barrettes barrets burettes birrettas berrettas barites barytes berettas birettas bredes brutes bardes boarts berets burets britts breeds barytas borates berates brattice burritos brits brats bards borts bruts bourrides beards bruits boards brides breads brights burdies birdies borides birds bortz brads burds
burettes barrettes syrettes curettes proettes ariettes sureties pretties parietes reties rottes aretes berettas pirouettes berrettas birrettas creates garottes garrottes laureates birettas rets
barret barrette barred berretta birretta