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.
poleyns pollens pleons paleness plans plains planes pylons paulins pillions plainness pollinize polonaise paulownias pliancy
poleyns lens woolens silenus pollens oleins liens pleons mullens melenas gleans lenes lenis lenos lense mulleins leans baleens flense villeins cleans colleens galenas galleins galleons glens aliens rellenos xylenes woollens