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.
plaiter plater pleater politer platter platier palter pelter poulter plotter pleader plottier polluter palliator pellitory paltry peltry polder plodder poultry
plaiter later philter halter flitter flatter floater falter elater filter plater platter politer palter relater quilter slater gloater slitter gladier dilater clatter bleater latter pleater gauleiter violater jilter leadier liter floatier loiter alter litter blatter platier realter bloater salter milter slatier kilter zoolater glitter tilter
plait plat palate pelite plaid plate plateau platy pleat polite polity aplite splat split uplit