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.
freaked phreaked forked fragged frocked freakout forecaddie frigged frogged frugged variegate forgat fracti foregut frigate furcate
wreaked phreaked creaked freaked shrieked charked reeked troaked wrecked traiked cracked darked racked perked raked narked recked larked barracked wracked tracked barked marked beraked parked braked reracked harked croaked jerked trekked carked warked sharked yerked