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.
reckon recon recoin rockoon racon racoon recane regna regain requin
beckon reckon con weakon cocoon deacon ikon sicken leukon rockoon eikon recoin racon beacon racoon neocon icon kaon bacon macon coon cony conn coni cone coin quicken koan recon scone daikon tycoon chicken
reck rec drek drecky dreck areca wreck ruck rock rocky rickey rick rekey reeky reek rack trek