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.
brawn brawny bran buran brown brain browny branny borane brainy born barn burn biriani bren brownie brin burin boron bruin barny baron bairn bourn borne brine briny barney barony barren boreen bourne briony burnie byrnie baronne
prawn brawn drawn ran murrain crown pyran marrano brown guarani serrano grana grain brawny drain furane furan frown buran drown terrain train crane rani grown bran roan purana parian brain pirana loran gran saran rain reran curran guarana saurian sierran groan borane durian terrane shoran
braw bra bora brae bray brew brow bura