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.
cometic comatic comedic comatik gametic komatik
emetic gametic mimetic cometic hematic zymotic homeotic somatic maieutic medic phimotic haematic comatic neumatic pneumatic sematic comedic somitic nematic demotic
comet comate combed comedo comedy comity comte