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.
keckles cackles cockles cookless coquilles gaggles goggles guggles
buckles mackles cockles pickles ruckles deckles nickles knuckles hackles cackles shackles tackles keckles chuckles suckles tickles muckles sickles heckles mickles huckles rockless feckless nucleus coles backless kales suckless wickless leakless jacales neckless sockless knockless luckless beakless cycles nickels boucles sicklies peakless deckels jackals reckless scales clews socles clues locales macles cheekless weeklies hookless cookless checkless locules chicles macules tackless