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.
baronet barned brunet burnet browned brunt brunette burnt brownout brant brent brined burned bornite brained branned burnout braunite brand brandy
baronet coronet pronto gurnet garnet crownet cornet carnet hornet ironed hairnet front burnet brunet aroynt aroint droned
baron baronne barony barn bairn barney barny boron briony brown brownie browny