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.
bracket brocket bract braked barracked beraked bricked breakout burked barked borked barracouta brooked bragged briquet brocade brigade bearcat burkite brookite barquette barracuda barricade briquette burgout
racket bracket reracked racked rackety rickety rocket wracked barracked cracked brocket cricket crocket market parakeet parrakeet pricket tracked
berake brake braky break brick bricky brock