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.
greenier greener greenery grainier careener garner grainer cornier grinner groaner corner kroner coroner crooner crowner granary kronor kronur
greenier brownier dernier preener runnier greener grainier cornier careener hornier vernier fernier brinier rainier brawnier brannier brainier barrener barnier greenery pornier serener warrener