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.
replate replete repled replot replead replied repealed repelled repolled reapplied rippled ripplet rappeled rappelled
plate replate toeplate plat appellate paleate deplete spoliate replete papillate plait populate oppilate palate platy palliate depilate epilate haplite hoplite copulate pleat cupulate splat aplite pileate
replay repeal repel replow reply repoll