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.
joky jokey jockey jock joke jouk jacky jocko jog juco juke jack jauk jake juku geeky jaggy jiggy
hooky joky coky cooky gooky kooky nooky poky rooky choky