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