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.
picot picotee picket pigout pact peacoat packet picked piquet pocket
dicot picot cot dicta coat coot cote bigot boycott gigot wyliecoat recoat scoot scot scout dacoit peacoat dicty
pic pica pick picky poco epic spic spica spicae spick