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.
pelmet plummet palmette palmetto palmed plumed palmate
pelmet helmet filmed helmed calmed calumet culmed guillemet palmed plummet whelmed
palm palmy plum plumb plume plummy plumy peplum