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.
recap recopy recoup recoupe reequip
becap kneecap recap toecap cap cape capo scape scaup
rec reck wreak wreck areca break freak freaky creak creaky orca reargue rerack dreck drecky