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.
berk berake bark berg birk bork brick barky burka brock burke braky break brook birkie bricky barrack burg brig brag barca baric boric bourg brake broke burqa