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.
plotty plot pilot platy polity pelota ploidy pullout palette plod plat pelt pallette pleat plait plate palet poult paillette palate plutei pelite pellet polite piolet pullet pallet paleate payload pileate plateau playday pollute palliate
blotty clotty plotty lotte lotto blotto floaty jolty calotte culotte slitty slutty zloty