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.
byroads broads brads boards breads braids broods brats birds bards burds bredes brides boarts bardes breeds beards burdies borides barytas birdies borates hybrids berates burritos birettas berettas borts berrettas bourrides birrettas bruts brits berets burets bruits britts brutes barites barrets barytes brights
roads byroads broads rods rads crowds breads reads viroids parodos parades myriads farads marauds oreads grads irades roods prods sarodes dorados droids tirades trades triads choroids broods parados aroids erodes rodes raids rotas gradus boards grades groats corrades braids hoards frauds corrodes brads periods rereads sarods dreads hydroids toroids treads charades shrouds