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.
brent brunt burnt brant burnet brunet burnout baronet brownout brunette brand brined brandy burned barned bornite brained branned browned braunite
rent brent rerent current horrent parent gerent torrent rant trend hydrant learnt runt cornet errant reorient grunt garnet front hornet currant warrant burnet tyrant carnet jurant grant arrant courant brunt hairnet rend forint burnt brant orient print rente gurnet yearend
bren barn barney barny boreen born borne bran branny brin brine briny burn burnie byrnie